### Home > CCA2 > Chapter Ch11 > Lesson 11.1.1 > Problem 11-10

11-10.

Natural logs and exponential functions with base are often used in formulas. But many problems can be solved equally well using either a base-

*logarithm. Solve each of the following problems, first using the*

*) on your calculator.*

log

log loglog You should get the same answer using natural logs.

See part (a).

Interpret the answer for part (a) if the equation represents an amount of money invested at

annual interest. What does

represent in this equation?Interpret the answer for part (b) if the equation represents the price paid for a car that depreciates at

per year. What does

represent in this equation?