The total cost (in dollars) of producing widgets is for

MATHEMATICS · Single correct · AP · Calculus AB · Analytical Applications of Differentiation · Analytical Applications of Differentiation

Problem

The total cost (in dollars) of producing

q

widgets is

C(q)=q^{2}+36q+400

for

q>0

. For what production level is the average cost per widget minimized? (a)

q=18

(b)

q=20

(c)

q=15

(d)

q=25