Real World Exponential Equations

A certain type of algae covers a pond surface and its area doubles every day. If the pond is fully covered in 12 days, what type of equation would describe the growth of the algae's coverage over time?

• Linear

• Exponential

A population of bacteria doubles every hour. If you start with one bacterium, which type of equation would you use to model the population after several hours?

• Linear

• Exponential

A savings account offers a fixed interest rate of 2% per year. If you deposit $1,000, which type of equation would you use to calculate the total amount of money in the account after several years?

• Linear

• Exponential

A species of fish has a population that increases by 20% each year in a lake. To predict the number of fish in the lake after several years, which type of equation should be used?

• Linear

• Exponential

Tags

CCSS.HSF.LE.A.2

An online shopping service launched with 560 members and the number of members is growing at a rate of 4.5% per week. Which of the following exponential equations can be used to find the number of members after weeks?

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CCSS.HSF.LE.A.2

You open a savings account with $200. It earns 5.2% interest each year. What is the exponential equation that can be used to find the amount of money $m$ in your account after $y$ years?

Tags

CCSS.HSF.LE.A.2

Tags

CCSS.HSF.LE.A.2

The population of Pallet Town increases by 15% every year. If there are currently 190,000 people living there, what will be the population in 13 years?

If necessary, round your answer to the nearest whole number.

• 4 people.

• 22,972 people.

• 1,169,030 people.

• 1,188,311 people.

Tags

CCSS.HSF-LE.A.1C

Ash has $8,000 in a savings account. The interest rate is 3% compounded once a year.

To the nearest cent, how much will he have in his account in 4 years?

• $9,004.07

• $2,2848.80

• $9,011.94

• $8,242.71