Exponent Problems

• 4

A bacteria culture starts with 1000 bacteria and doubles every hour. Write an exponential expression to represent the number of bacteria after x hours.

• 1000 / 2^x

• 1000 * x^2

• 1000 * 2^x

• 1000 + 2^x

If a car depreciates by 20% each year, write an exponential expression to represent the value of the car after x years if it was originally worth $10,000.

• $10,000 * (0.8)^x

• $10,000 * (0.2)^x

• $10,000 * (1.2)^x

• $10,000 * (0.5)^x