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

Question

anonymous · Answer

attachment

shane_b · Answer

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?

anonymous · Answer

@shane_b y=5X7+0, right?

anonymous · Answer

y=35

shane_b · Answer

Exactly right :)

anonymous · Answer

so thats all?

anonymous · Answer

@shane_b thats all i have to do???

shane_b · Answer

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

anonymous · Answer

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

shane_b · Answer

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.