Log Word Problem

• 1

• 2

• 3

• 4

What is the growth rate?

• 6%

• .06%

• 1.35%

• .6%

What is the rate of growth as a constant (One number) in the equation?

• 1.04

• 7

• 49

• 1

The number of people infected by a virus can be modeled by h(t) = 5.7 + 19ln(t). Where "t" is time in days. How many people will be infected after 17 days?

• 80822 people

• 2 people

• 9 people

• 60 people

Solve the real-world problem using logarithms: If a car depreciates at a rate of 20% per year, how many years will it take for the car's value to be half of its original value?

• Approximately 3 years

• Approximately 4 years

• Approximately 5 years

• Approximately 6 years

Solve the real-world problem using logarithms: If a population of bacteria doubles every 3 hours, how long will it take for the population to grow from 100 to 800?

• 9 hours

• 12 hours

• 6 hours

• 3 hours

• about 7 years
• about 10 years
• about 18 years
• about 22 years

Solve the real-world problem using logarithms: If the intensity of an earthquake is measured to be 1000 times the minimum intensity, what is its magnitude on the Richter scale?

• 3

• 4

• 5

• 6

Solve the real-world problem using logarithms: A certain radioactive substance decays at a rate of 5% per year. If you start with 100 grams, how much will remain after 20 years?

• Approximately 35.85 grams

• Approximately 50 grams

• Approximately 60 grams

• Approximately 75 grams

Using logarithms to solve real-world problems: The value of a car depreciates by 10% each year. If the initial value of the car is $20,000, what will be its value after 5 years?

• The value of the car after 5 years will be $25,000.

• The value of the car after 5 years will be $18,000.

• The value of the car after 5 years will be $12,861.30.

• The value of the car after 5 years will be $22,000.