8.12D- Simple Interest

What is the formula for simple interest?

• A=P(1+r)^t
• I=Prt
• I=P(1+r)t
• A=Prt

What does the P in I =PRT mean?

• Power

• Principal

• Product

• Percent

Question #5

In the formula I=P·R·T, what does r stand for in a loan?

A. Rate: the interest percentage you will pay on a loan

B. Ratio: the size of the interest interval compared to time

C. Return: how much money you end up earning

D. Reserves: how much money you have in the investment

• A

• B

• C

• D

Ivan deposits $5,000 into an account that pays simple interest at a rate of 5% per year. How much interest will he be paid in the first 3 years?

What is the principle? ​ (a)  

What is the rate? ​ (b)  

What is the time? ​ (c)  

• $5,000
• 5%
• 3 years

Ivan deposits $5,000 into an account that pays simple interest at a rate of 5% per year. How much interest will he be paid in the first 3 years?

Mathematical Equivalence

ON

To be able to go on a trip to South America, Ann decides to save for 4 years. She opens a savings account with $300. The account pays simple interest at an annual rate of 5%. She doesn't make any more deposits. What will the total amount in the account be (including interest)?

Mathematical Equivalence

ON

Caiden earned $475 from mowing lawns last summer. He deposited this money in an account that pays a simple interest rate of 3.8%. What will be the amount of interest earned after 15 years?

• $3182.50

• $270.75

• $2707.50

• $745.75

Emily’s parents put $1500 in her bank account for college tuition at a simple interest rate of 8.25%. What will be the balance after 18 years?

• $22,275

• $2227.50

• $12,375

• $3727.50

Mark took out a loan for $25,690 to purchase a new truck at a simple interest rate of 5.2%. How much interest will he pay on his truck after 5 years?

• $6,679.40

• $32,369.40

• $66,794

• $679.40

Olivia would like to buy some new furniture for her home. She decides to buy the furniture on credit with 9.5% simple interest. If she spent $7400 on furniture, how much will she have paid in total after 8 years?

• $5624

• $13,024

• $56,240

• $1302.40