Chapter 6.3, Problem 2E

Reminder Round all answers to two decimal places unless otherwise indicated.

McDonald’s The formula

$M\left(t\right)=1.19t+13.22$

gives the approximate total revenue, in billions of dollars, for McDonald’s $t$ years after $2000$. The formula applies to the years $2000$ through $2013$.

a. What is the value of $\frac{dM}{dt}$? (Suggestion: Note that $M$ is a linear function of $t$.)

b. Explain the meaning of the value you found in part a in practical terms.