### Home > CCAA8 > Chapter 9 Unit 10 > Lesson CCA: 9.4.3 > Problem9-119

9-119.

This problem is a checkpoint for writing exponential equations. It will be referred to as Checkpoint 9.

Write an exponential equation to represent the situation and answer the question.

1. If the cost of a loaf of bread is now $\2.75$ and is increasing at $5\%$ per year, what will it cost $10$ years from now?

2. The population of Flood River City is now $42,000$. Experts predict the population will decrease $25\%$ each year for the next five years. What will be the population in five years?

3. A share of Orange stock that was worth $\25$ in $2000$ was worth $\60$ in $2010$. What is the multiplier and percent increase?