An aircraft factory manufactures airplane engines. The unit cost

Question

C
(the cost in dollars to make each airplane engine) depends on the number of engines made. If
x
engines are made, then the unit cost is given by the function
=Cx+−0.2x248x21,748
. What is the minimum unit cost?

Do not round your answer.

Answer 1

C appears to be a quadratic. As with any quadratic

ax^2+bx+c

the vertex lies at x = -b/2a

So, find C(x) at that value.