For homework, Fred has to read 30 minutes daily. It takes him 2 minutes per page, and he spends 4 minutes viewing graphics in the book. If x represents the number of pages he reads, then 2x + 4 ≥ 30 represents the time he reads each day. What is the fewest number of pages Fred must read to complete his homework?

- anonymous

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- anonymous

i believe its 13

- anonymous

yea i thot so

- DanJS

they gave you the inequality here,
2 min/page*(#pages) + 4 min >= 30 minutes total

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## More answers

- anonymous

thx

- anonymous

i have another

- anonymous

ok

- anonymous

13

- anonymous

Which equation best represents the situation?
Cara served pizza and punch at a party. Each pizza fed 6 people, and each guest received a glass of punch. If a glass of punch cost 50¢, and Cara spent $2.50 for each guest, what was the cost of each pizza?

- DanJS

solve for the range of x, the pages

- anonymous

ur too late dan lol

- DanJS

well they don't give you the inequality this time,,

- anonymous

- DanJS

tso the concept has to be put together

- anonymous

can someone help me with this problem

- anonymous

- anonymous

it says i gotta log in... the best way i can help you is by saying she only bought one pizza because she only had 5 guests

- DanJS

Each guest cost $2.50 total, that is the same cost as 1/6 of a pizza, and one glass of drink

- DanJS

put that into an equation
2.5 = p/6 + 0.5 balancing the $$

- anonymous

oh then the pizza would be twelve dollars?

- anonymous

a.x/6+.50=2.50
b.6x+.50x=2.50
c.x/6+50=2.50
d.6x-2.50=.50

- DanJS

1 guest cost 2.50 and consumed 1/6 a pizza and one drink
2.50 = x/6 + 0.5

- anonymous

so it would be a

- DanJS

yes,

- anonymous

oh yeah lol..

- anonymous

okay thx i have a couple more if you guys can help?

- DanJS

The main point is to read the thing a couple times, summarize it, and convert that to equation(s)

- anonymous

suuure

- DanJS

If you can keep track of units well, that makes it much easier

- anonymous

Which inequality best represents the situation?
A pine tree grows at a rate of 1.5 feet per year. James plants a 2-foot tall pine tree in his yard. How many years will it take for the tree to be at least 14 feet tall?

- anonymous

okay dan

- anonymous

A.
2x + 1.5 ≥ 14
B.
2x – 1.5 ≤ 14
C.
1.5x + 2 ≥ 14
D.
1.5x – 2 ≤ 14

- anonymous

i think d

- DanJS

Here is my thought,
1)the tree grows at a constant rate, 1.5 ft / 1 yr, it must be a linear relationship

- anonymous

okay

- anonymous

so we divide

- DanJS

for each increase in yrs, the height grows the same amount, constant slope for a line

- anonymous

i think its c

- DanJS

says it starts at 2 ft tall, that is the value at time of zero, and the y intercept for the line

- anonymous

right so that means that we need to dive those 2 numbers

- anonymous

okay

- DanJS

they give you 1 point, and the slope, you can make an equation for a line

- anonymous

its c

- DanJS

y = m*x+b
y = 1.5x + 2

- anonymous

hwo is that mega

- anonymous

oh so it is c y

- anonymous

exactly dans equation y = 1.5x + 2

- anonymous

ohhhhh right

- anonymous

okay

- DanJS

now that you know the equation for the line, y = 1.5*x + 2
they want to know when it will be at least 30 ft tall?
the 1.5x + 2 has to be greater than or equal to 30 ft

- anonymous

is that it?

- DanJS

yes, that is how i would think thorugh it, basically

- anonymous

You want to find out how many cards were in Mona's deck at the beginning. Which situation about her game best represents the equation x/4+2=10 ?

- anonymous

Mona gave 4 players an equal number of game cards and then put 2 cards back in the box. After that, the first player had 10 cards.
B.
Mona gave 4 players an equal number of cards and then gave the first player 2 extra cards. After that, the first player had 10 cards.
C.
Mona gave 4 players an equal number of cards and then gave each player 2 additional cards. After that, each player had 10 cards.
D.
Mona gave 4 players an equal number of cards and then gave 1 more card to 2 players. After that, the first player had 10 cards.

- anonymous

I think b

- anonymous

no c

- anonymous

right?

- DanJS

from the question it is hard to tell, since there are no units for x and 10,
cards vs players

- DanJS

so you have to read the responses, and figure that

- anonymous

hmmmm?

- anonymous

could u help me with that?

- DanJS

x is the number of cards in the full deck

- anonymous

okay

- anonymous

so we would subtract

- anonymous

without x

- anonymous

right?

- anonymous

come one mathlete

- DanJS

sorry, had to step away a second...

- anonymous

thats okay

- DanJS

the 4 is the number of players that was given, ...

- anonymous

right

- DanJS

the total cards x, was divided by the number of players, x/4

- anonymous

okay

- anonymous

so substract?

- DanJS

thif you look at the units there, you get cards per player
cards / player
the units have to be the same on both sides of the equation, so that constant 2, and 10 will also be cards/player

- DanJS

cards / player + cards / player = cards / player

- anonymous

so the answer is c right? or

- DanJS

sorry, i will restart, was distracted, and this is wrong.

- anonymous

what is ?

- anonymous

is is a ?
do u know the answer?

- anonymous

talk to meh

- anonymous

hello?

- anonymous

hey umm? so i kinda dont have much time till i have to go so if you could just ya know help meh that would be awesome lol

- anonymous

so its c

- anonymous

right?

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