The graph shows the cost of renting a bicycle. A graph with small horizontal steps showing hours rented on the x axis and rental cost in dollars on the y axis. The steps have open dots on the left ends and closed dots on the right ends. From left to right the dots are open zero comma 4 and closed 1 comma 4, then open 1 comma 6 and closed 2 comma 6, then open 2 comma 8 and closed 3 comma 8, then open 3 comma 10 and closed 4 comma 10, then open 4 comma 12 and closed 5 comma 12, then open 5 comma 14 and closed 6 comma 14.

For this function, what is the average rate of change over the interval 5.5 ≤ x ≤ 6?
A. 3
B. 1
C. 0.5
D. 0

Someone answer this asap rn for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =