. The Carmike Patriot 12 Theater sells an annual popcorn bucket for $25. The bucket can be re-filled an unlimited number of times for $3.75 per refill. The following graph shows how the amount spent on popcorn and the number of popcorn bucket refills are related. Use the graph to complete parts a-g.

c. What is the rate of change? (Use the triangle or the slope formula and include units.)

Rate of change (with units)______________________

d. Complete the statement to express the rate of change in words:

For every 1 popcorn bucket refill purchased the annual amount spent on popcorn _________________by

$_______

(Choose one: increases or decreases)

e. Create the linear model for this situation in slope-intercept form (y = mx + b).

y = ___________________________

f. If a customer buys a popcorn bucket and purchases 8 refills this year, what will her total amount spent on popcorn be? (Show some work in the graph or using the equation from part e.)

$___________

g. If a customer's total annual amount spent on popcorn is $130, how many refills did they buy? (hint: use the equation you found in part e.)