A sailboat that costs $5,950 decreases in value by 11% per year. How much will the boat be worth after 6 years?

The equation y = a(1 - r)^x is used for:

The equation y = a(1 + r)^x is used for:

The Country of Puerto has 3,370,000 people in it and is decreasing at a rate of 4.5%. Estimate the population after 40 years.

A population of a city is 422,000 and increases by 12% each year. Use an exponential function to find the population of the city after 8 years.

You put $2000 in the bank and earn interest at a 2.5% rate compounded annually. How much will you have after 15 years?

Middletown High School has student elections every year. Lately, the school has seen a 5% decrease in voting from election to election. If 910 students voted this year, how many will be expected to vote 8 years from now? (Round to the nearest whole number if necessary).

More and more people are purchasing food from farmers' markets. As a consequence, a market researcher predicts that the number of farmers' markets will increase by 15% each year. If there are 6,200 farmers' markets this year, how many will there be in 10 years? (Round to the nearest whole number if necessary).

A publishing industry report predicts that magazine subscriptions will drop by 10% each year. If this prediction is correct, then how many subscribers will a magazine with 98,000 subscribers have in 10 years? (Round to the nearest whole number if necessary).

Jenny has $20 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much interest will she earn in 2 years?

Lauren has $90 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much will she have in 2 years?

A cliff overlooking Oak Grove Lake is experiencing erosion, losing elevation at a rate of 5% every millennium. The cliff's current elevation is 1,200 meters. What will its elevation be in 6 millennia? (Round to the nearest whole number if necessary).

Kelsey deposited $30 in a savings account earning 10% interest, compounded annually. To the nearest cent, how much interest will she earn in 3 years?

Thanks to its environmental initiatives, Silvergrove has cut its annual CO2 emissions by 5%. This year, the town produced 290,000 metric tons of emissions. If the downward trend continues, how much CO2 will be produced 7 years from now? (Round to the nearest whole number if necessary).

The mice population is 25,000 and is decreasing by 20% each year. What will be the mice population after 3 years?

Your new computer cost $1500 but it depreciates in value by about 18% each year. How much will your computer be worth in 6 years? (Round to the nearest cent.)

$$y=3\left(1.5\right)^x$$  

$$y=100\left(5\right)^x$$  

Evaluate the expression $$f\left(x\right)\ =\ 100\left(0.8\right)^x$$  for f(3).

In the formula y = a(1±r)^t, what does the "a" represent?

In the formula y = a(1±r)^t, what does the "t" represent?

In the formula y = a(1±r)^t, what does the "r" represent?

If something decays at a rate of 2.5% per hour, what would "t" be over two days?

If something changed at a rate of 3% per week, what would "t" be over a time of one year?

Given the function f(x) = 1.07^x, how do you know this is an exponential function?

Given the function f(x) = 1.07^x, how do you know the exponential function shows growth or decay?

Given the function f(x) = 1.07^x, is this a growth or decay function?

Given the function f(x) = 0.92^x, is this a growth or decay function?

Given the function f(x) = 0.92^x, what is the rate of change?

Given f(x) = (1.11)¹⁸ and the rate of change is 11% every day, how much time has passed?

Given f(x) = (1.0023)³⁶ and the rate of change is 0.23% every hour, how many minutes have passed?

In 1985, there were 285 cell phone subscribers in Mayville. The number of subscribers increased by 75% per year after 1985. How many subscribers were in Mayville in 2008? (Verbal Question: What word tells us this is growth or decay?)

The population in Haywardsville is decreasing at a rate of 2.5% per year. If the population in 2000 was 28,000, what will be the expected population in 2015 if this rate of decrease continues? (Verbal Question: How do we know this is growth or decay?)

The value of a book is $58 and depreciates at a rate of 7% per year. Write an exponential function to find the value of the book after 8 years. (Verbal Question: How do we know this is growth or decay?)

The population of a small town is 1600 and is increasing at a rate of 3% per year. Write an exponential function to model this situation. Then find the population of the town after 10 years. (Verbal Question: How do we know this is growth or decay?)

Willie invests $8,515 in a retirement account with a fixed annual interest rate of 5% compounded continuously. What will the account balance be after 20 years?

Jessica invests $3,948 in a savings account with a fixed annual interest rate of 9% compounded continuously. What will the account balance be after 11 years?

Adam invests $5,208 in a savings account with a fixed annual interest rate of 8% compounded continuously. What will the account balance be after 8 years?

What does the P stand for in this formula?

What does the r stand for in this formula?

What does the t stand for in this formula?

Jessica invests $3,948 in a savings account with a

fixed annual interest rate of 9% compounded continuously. What will the account balance be after 11 years?

Sumalee invests $6,227 in a savings account with a

fixed annual interest rate of 8% compounded continuously. What will the account balance be after 6 years?