Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-Suppose the number of Quickie hamburgers (in millions) served yearly can be modeled by $f ( x ) = 39.6 e ^ { 0.14 x }$ . Approximate how many years it takes for the number of hamburgers served to reach 152 million. Round to the nearest year.

A) $9 \mathrm { yr }$
B) $11 \mathrm { yr }$
C) $10 \mathrm { yr }$
D) $12 \mathrm { yr }$