Question

If you start at 89 degrees and it decreases 5% each hour what would it be at in 3 hours

Answer 1

A = 76.3 degrees after 3 hours

Explanation:

An exponential function is needed here:

A = P(1 - 0.05)^3, where this (1 - 0.95) reflects a DECREASE of 5%/hour.

Then: A = (89 degrees)(0.95)^3, or

A = 76.3 degrees after 3 hours