Question

The cost in dollars of making z items is given by the function C(z) = 20z + 250.

Which of the following correctly represents the cost of making 10 items using the given function?

a) C(10) = 20(10) + 250
b) C(10) = 10(20) + 250
c) C(10) = 20(10) - 250
d) C(10) = 20(10) * 250

Answer 1

The correct expression for the cost of making 10 items using the function C(z) = 20z + 250 is C(10) = 20(10) + 250, which equals $450.

Step-by-step explanation:

The cost in dollars of making z items is given by the function C(z) = 20z + 250. To find the cost of making 10 items, you would substitute z with 10 in the function. This results in the calculation:

C(10) = 20(10) + 250, which simplifies to:

C(10) = 200 + 250

Therefore, the cost of making 10 items is $450. The correct representation of the cost for making 10 items using the given function is option a) C(10) = 20(10) + 250.