Question

The price of oranges went from $.90 per lb to $1.20 per lb in five years. Find the rate of change of the price of oranges.

A) $0.30 per pound per year
B) $0.06 per pound per year
C) $0.24 per pound per year
D) $0.18 per pound per year

Answer 1

1.20=0.90(1+5x)
Solve for x
X=0.06

The answer is b