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KaylaClemens15
 2 years ago
1.A local bank has a debit card that gives a $3 reward each month you use your card for $50 or more in purchaces. Write an equation relating rewards earned,y, to total monthly purchaces, x. Give the domain of this function.
2. A local credit union has a debit card that rewards 3% of your total monthly purchases. Write an equation relating rewards earned,y, to total monthly purchases, x. Give domain of this function.
KaylaClemens15
 2 years ago
1.A local bank has a debit card that gives a $3 reward each month you use your card for $50 or more in purchaces. Write an equation relating rewards earned,y, to total monthly purchaces, x. Give the domain of this function. 2. A local credit union has a debit card that rewards 3% of your total monthly purchases. Write an equation relating rewards earned,y, to total monthly purchases, x. Give domain of this function.

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satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3the second one is easiest i think you get 3% of your monthly purchases, so if you call your monthly purchases \(x\) then you get \(y=0.03x\)

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3it has no lower limit, so i would say the domain is \((0,\infty)\) or "positive numbers"

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Honestly, any input would be appreciated. I'm totally clueless!

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3this is not quite accurate, since you cannot spend say \(\pi\) dollars so maybe the domain is positive integers

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3how fancy is this math class?

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3maybe you can get away with saying "positive numbers"

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0It's just Algebra 1

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3okay so you probably don't have to be so picky for the second one you can use \(y=0.03x\) and say the domain is positive numbers

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3for the first one, it is really \[y= \left\{\begin{array}{rcc} 0 & \text{if} & x <50\\ 3& \text{if} & x \geq50 \end{array} \right. \]

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3but that might be too fancy as well, so maybe you can just say \(y=3\) if \(x\geq50\) or maybe even just say \(y=3\) and the domain is \(x\geq 50\)

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Okay, thank you so much!! I've been stuck on math problems all night. I still have 3 more to go :(

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3go ahead and post, i will look, or just ask here

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0I'll type it here, if that's alright

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3go ahead, i will answer if i can

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.01. Abigail orders a large 2 topping pizza for $14 and a medium 1 topping pizza for $10. If all coats of a medium pizza are 80% of a similar large pizza, find rhe price of a large plain cheese and the cost of each large pizza topping.

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3whoa this is going to take a second not too long though

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0You don't have to do it if you don't want to! I understand.

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3oh no we can definitely do this for sure

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Alrighty, thank you so much.

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3we can call the price of the topping \(y\) and the price of the large plain pizza \(x\) so the price of the medium plain pizza is \(0.8x\)

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3then the first part tells you \[x+2y=14\] and the second part say \[.8x+y=10\]

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3now before we solve this, i can make a good guess, which is that \(x=10\) and \(y=2\)

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3because \(10+2\times 2=14\) and \(0.8x\times 10+2=8+2=10\)

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3i am assuming of course that the toppings for the large and small pizza are the same if they are not the same you cannot solve the problem

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3in any case to solve \[x+2y=14\]\[.8x+y=10\] multiply the second equation by 2 and add you get \[x+2y=14\] \[1.6x2y=20\] \[.6x=6\] \[x=6\div .6=60\div 6=10\]

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3so it is right large pizza is $10, medium is $8, toppings are $2

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Thank you so much! You make the problems seem so much easier. I might actually get some sleep tonight for school tomorrow!

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3yw any more or are you done?

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0I have one more.

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0It's the hardest one

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Nathan wants to go to a hockey game with friends. Tickets are $18, but students can get discounted tickets for $12. They want to spend no more than $80, including $8 for parking. The vehicle they will take can only hold 7 people. Write and graph (it's a regualr coordinate graph) a system of foir inequalities modeling their possible ticket purchases. Let x= number of student tickets and y= number of regular tickets

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3one thing we know is that \(x+y\leq 7\)

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3because at most 7 people can go

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3we also know that they are going to pay $8 for parking, leaving \(808=\$72\) for tickets and so \(12x+18y\leq 72\)

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3i think the other two inequalities are the easy ones, both \(x\geq 0\) and \(y\geq 0\) which just means you are in quadrant 1

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3can you graph \(x+y=7\)?

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3dw:1363921714846:dw

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3if \(x=0\) you get \(y=7\) so \((0,7)\) is on the graph, and similarly \((7,0)\) is on the graph plot the points, connect the dots

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3you got it from the picture?

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0I can't see your drawing because I'm on my phone, I can't access a computer.

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0I know how to graph points, so I should be fine

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Whatt do I do next?

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3the line \(12x+18y=72\) contains the points \((0,4)\) and \((6,0)\) so plot those points as well and connect the dots

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3then shade everything in quadrant 1, and below those two lines

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3i obviously cannot draw it here for you to see, but that is what you have to do

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Yes, I understand

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.3then i guess you are done any point that is shaded in the picture is possible

KaylaClemens15
 2 years ago
Best ResponseYou've already chosen the best response.0Ok, sweet. Thank you very much for all your time and help. Have a nice night! :)
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