Question

Is my answer correct?

Answer 1

The table shows the cost of an adult movie ticket, for an evening show, at a theater for different years.
http://static.k12.com/eli/ecollege/1546/7_80381/2_62109_4_80538/4cb4ef60196e403558e87782da3fb0bb9e64c896/media/4e433fabc7f162e375fd11ceeae75cb576a26a86/mediaasset_1488156_1.jpg

What was the average rate of change in the ticket cost between 1993 and 2013?

Answer 2

would it be 18.91

Answer 3

@Jhannybean Do you know?

Answer 4

sorry :\

Answer 5

it's fine

Answer 6

@jim_thompson5910 do you know how to do it?

Answer 7

Use the formula

\[\Large m = \frac{f(b)-f(a)}{b-a}\]

Answer 8

im so lost

Answer 9

or you can just look at it as

\[\Large \text{AROC} = \frac{\text{change in cost}}{\text{change in year}}\]

AROC is shorthand for "average rate of change"

Answer 10

basically you subtract the costs, then subtract the years, then divide

you subtract in the same order

Answer 11

is it 0.15 or 6.66

Answer 12

what's the change in cost?

Answer 13

$3

Answer 14

and the change in year?

Answer 15

20

Answer 16

so,
\[\Large \frac{\text{change in cost}}{\text{change in year}} = \frac{3}{20} = 0.15\]

Answer 17

this means the price of the ticket is increasing by $0.15 each year