5.3 exponential growth and decay

Front

A population of 2200 beetles decreases each month at a rate of 5%.

How would you write your decay factor, b?

Back

0.95

Front

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the decay factor?

Back

0.92

Front

Equation showing an initial amount of $15 and an increase of 35% each year.

Back

Front

Classify the model as exponential growth or decay.

Back

Growth

Front

James’ 70 inch giant peach doubles in size every week. Which expression would represent how big the peach is after 5 weeks?

Back

Front

Model Samantha’s hair growth situation: Initial length = 6 inches, Growth rate = 14% per week.

Back

Front

A culture of bacteria begins with 5000 cells and dies by 30% each year. Model this.

Back

Front

The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. How many mosquitoes will there be after 4 months?

Back

9766

Front

The attendance at the art museum at the New Year’s opening was 250 people. The attendance has been increasing at a rate of 3% each month. How many people will attend by the end of the year?

Back

356

Front

An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by

29%. What is the multiplier in this problem?

Back

0.71