If Y = A × N × (75 + K/N),where K = 1000,N = 20,and A = 10,what happens if K doubles and N doubles?
A)Y is unchanged.
B)Y increases by 50%.
C)Y doubles.
D)Y quadruples.

Question

Quizplus · Accepted Answer

When K doubles to 2000 and N doubles to 40, we have:

Y = A × N × (75 + K/N)
Y = 10 × 40 × (75 + 2000/40)
Y = 10 × 40 × (75 + 50)
Y = 10 × 40 × 125
Y = 50,000

Thus, Y doubles from its original value of Y = 10 × 20 × (75 + 1000/20) = 50,000. Therefore, the correct choice is C.

If Y = a × N × (75 + K/N),where