A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 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.
anonymous
 3 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.

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0the second one is easiest i think you get 3% of your monthly purchases, so if you call your monthly purchases \(x\) then you get \(y=0.03x\)

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

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0this is not quite accurate, since you cannot spend say \(\pi\) dollars so maybe the domain is positive integers

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0how fancy is this math class?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0maybe you can get away with saying "positive numbers"

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0okay 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

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but 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 \(x\geq 50\)

anonymous
 3 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 :(

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0go ahead and post, i will look, or just ask here

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0go ahead, i will answer if i can

anonymous
 3 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.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0whoa this is going to take a second not too long though

anonymous
 3 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.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oh no we can definitely do this for sure

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0we 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 \(0.8x\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0then the first part tells you \[x+2y=14\] and the second part say \[.8x+y=10\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0now before we solve this, i can make a good guess, which is that \(x=10\) and \(y=2\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0because \(10+2\times 2=14\) and \(0.8x\times 10+2=8+2=10\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i 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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0in any case to solve \[x+2y=14\]\[.8x+y=10\] multiply the second equation by 2 and add you get \[x+2y=14\] \[1.6x2y=20\] \[.6x=6\] \[x=6\div .6=60\div 6=10\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0so it is right large pizza is $10, medium is $8, toppings are $2

anonymous
 3 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!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yw any more or are you done?

anonymous
 3 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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0one thing we know is that \(x+y\leq 7\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0because at most 7 people can go

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0we also know that they are going to pay $8 for parking, leaving \(808=\$72\) for tickets and so \(12x+18y\leq 72\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i 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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0can you graph \(x+y=7\)?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1363921714846:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0if \(x=0\) 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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0you got it from the picture?

anonymous
 3 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.

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

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0then shade everything in quadrant 1, and below those two lines

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i obviously cannot draw it here for you to see, but that is what you have to do

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0then i guess you are done any point that is shaded in the picture is possible

anonymous
 3 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! :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.