## MATH 100: Precalculus

Exponent Activity

Krystal starts a math tutoring business. Her first year she has 1
customer and earns $1000. In her second year, her customer refers a
friend to the tutoring service; she has 2 customers and earns $2000.
If Krystal can double her customer base and earnings every year, can
she make a living doing this?
**Bonus:** find equations that describe the number of students
Krystal has and the amount of money Krystal earns in a year.

**Hint:** Make a table showing Krystal's earnings each year. If you still
can't answer the question, use your table to sketch the graph of her
yearly earnings function.

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