14. Pizza palace offers five sizes personal: (8 inches) small:(10 inches) medium:(12 inches) large:(14 inches) and extra large:(16 inches) the cost c(d) of making a pepperoni pizza can be expressed as a function of the diameter D of the pizza. What is the average rate of change in cost from an eight inch to a sixteen inch pizza?
To calculate the average; add up all the numbers, then divide by how many numbers there are. In this case, there are 5 numbers; personal, small, medium, large, and extra large. 8 + 10 + 12 + 14 + 16 / 5 --> 60/5 = 12
