Question

Medals!
Pizza Palace offers five sizes: personal (8in), small (10in) medium (12in), large (14in), and extra large (16in). the cost C(d), of making a pepperoni pizza can be expressed as a function of the diameter, d, of the pizza.
d C
8 2.51
10 3.93
12 5.65
14 7.70
16 10.05
what is the average rate of change in cost from an 8 in to a 16 in pizza

Answer 1

(8, 2.51)
(16, 10.05)

Average Rate of Change is the same thing as slope, so we can use the slope formula:

\(m = \dfrac{y_2-y_1}{x_2-x_1}\)

\(m = \dfrac{10.05-2.51}{16-8}\)

Subtract 10.05 - 2.51, what do you get?

Answer 2

@AdamLamebert

Answer 3

7.54?

Answer 4

Yes, now subtract 16 - 8

Answer 5

8

Answer 6

Yes, so we have \(\dfrac{7.54}{8}\)

Now divide 7.54 / 8

Answer 7

Can you do that?

Answer 8

0.94

Answer 9

Yeah, that's the average rate of change.

Answer 10

HI