Question

If t is time in hours, what does this function represent?

f(t) = 2.0.3^t

A. a 30-percent increase every hour

B. a 30-percent decrease every hour

C. a 70-percent decrease every hour

D. a 100-percent increase every hour​

Answer 1

• C. a 70-percent decrease every hour

Explanation:

Given function:

• f(t) = 2.0*(0.3)^t

This is exponential decay because:

• 0.3 = 1 - 0.7 = 100% - 70%

and it represents 70% decrease every hour (if it is time in hours)

Correct choice is C