Each function below models the quantity, $Q(t)$, of a substance present after $t$ years. For each substance, answer the following questions and compare your answers between parts a) and b).
a) $Q(t)=38 e^{0.48 t}$
i) What is the quantity at time $t=0$?

ii) Is the quantity increasing or decreasing over time?

A. Increasing
B. Decreasing

iii) What is the effective annual growth or decay rate?
percent per year

iv) Is the exponential equation expressed as continuous growth/decay?

A. Yes
B. No

b) $Q(t)=22.9 (0.24)^t$
i) What is the quantity at time $t=0$?

ii) Is the quantity increasing or decreasing over time?

A. Increasing
B. Decreasing

iii) What is the effective annual growth or decay rate?
percent per year

iv) Is the exponential equation expressed as continuous growth/decay?

A. Yes
B. No

Hint: