Question

An auto shop charges a customer an equal amount for each new tire purchased plus an additional fee for an oil change. The function C (t) = 87t + 32 represents the total cost.of getting an oil change and purchasing t tires———————————————Which values does the number 87 represent in the function?

Answer 1

The cost function is:

`C(t)=87t+32`

We can say:

87t is the variable cost, depends on what "t" is

32 is the fixed cost

From the problem, we can infer that "32" is the cost of oil change [fixed]

87t is the cost of t tires [variable cost]

Since t is the number of tires, then 87 would be the cost of 1 tire