Solve the Problem. -Suppose That the Labor Cost for a Building Is Approximated

Multiple Choice

Solve the problem.
-Suppose that the labor cost for a building is approximated by where x is the number of days of skilled labor and y is the number of days of semiskilled labor required. Find the x and
Y that minimize cost C.

A) x = 8, y = 210
B) x = 105, y = 42
C) x = 4, y = 105
D) x = 42, y = 315