LT 10 Expo Word Problems Practice

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

Which equation represents this?

• $A=8,000\left(1+\frac{.03}{4}\right)^{4t}$

• $A=8,000\left(1+\frac{3}{4}\right)^{3t}$

• $A=8,000\left(1+\frac{.3}{4}\right)^{4t}$

A sailboat that costs $5,950 decreases in value by 11% per year. Write an equation to represent this scenario.

The value of a car purchased for $20,000 decreases at a rate of 12% per year. What function represents this scenario?

The population of Pallet Town increases by 15% every year. If there are currently 190,000 people living there, what equation represents this scenario?

Due to its weakening steel industry, Canalave Town has been experiencing a population decline of 10% every year. The current population is 74,000 people. Assuming the trend continues, which equation projects the population in x years?

• y = 74,000 (0.10)^x

• y = 74,000 (0.90)^x

• y = 74,000 (1.10)^x

• y = 74,000 (1.90)^x

Tags

CCSS.HSF.LE.A.2

The number of research papers in Professor Sycamore area of expertise has been increasing by 5% every year. Given that 30,010 research papers were published this year. Assuming the trend continues, which equation projects the amount of research papers published in x years?

• y = 30,010 (.05)^x

• y = 30,010 (1.05)^x

• y = 30,010 (.95)^x

• y = 30,010 (5)^x

Tags

CCSS.HSF.LE.A.2

A newly launched clothing line is rapidly increasing in popularity. Every month, 20% more items of clothing are sold. If 89,090 items were sold to start, which equation represents this scenario?

An account that has $300 invested at 6.5% for 4 t years compounded semi-annually. Which equation represents this?

Katy deposited $90 in a savings account earning 5% interest, compounded quarterly. Which of the following equations could represent the amount of money in her account yearly?

• 
• 
• 
• 

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

A city doubles its size every 64 years. If the population is currently 225,000, what equation represents this scenario?

• $y=225,000\left(2\right)^x$

• $y=225,000\left(2\right)^{\frac{64}{x}}$

• $y=225,000\left(2\right)^{\frac{x}{64}}$