Answer:
1,500
Explanation:
Remember that in a cost function, the cost per item is multiplied by x and the fixed cost is the part of the equation that is not multiplied by anything.
Cost = (Cost per item)(x) + Fixed cost
C(x) = 90x + 1,500
As you can see:
(Cost per item) would be 90
x would be, well x.
The fixed cost would be 1,500.