Question

The movie house charges $5 per DVD rented. Use the graph below to determine the total cost if 7 DVDs are rented.

Answer 1

Take a look at the line...if you calculate the slope, you'll get this equation:
y=5x+0

Where y = the total cost of x DVDs. If you plug in 7 for x, what do you get?

Answer 2

@shane_b y=5X7+0, right?

Answer 3

y=35

Answer 4

Exactly right :)

Answer 5

so thats all?

Answer 6

@shane_b thats all i have to do???

Answer 7

In this problem yes. You just needed to calculate the slope which is:\[\frac{Rise}{Run}\]

Answer 8

@Shane_B , so itll be: 35/? idk..

Answer 9

Yes....and when you look at where the line crosses the x=7 mark, you'll see it's also 35...which confirms the answer.