In the formula I=P·r·t, what does r stand for?
Henry and Walter open savings accounts at the same time. Henry invests $6,500 at 4.54% simple interest, and Walter invests $7,100 at 4.74% simple interest. After eight years, how much more interest has Walter earned than Henry?
If you wish to calculate the interest on an investment with a rate of 6.17%, what number will you plug into your equation?
Iris has an investment worth $8,813. She made her only deposit in it seven years ago. Given that the investment yields 3.7% simple interest annually, how big was the initial deposit?
Arthur has $19,500 to invest, and wishes to gain $8,000 in interest over eleven years. Approximately what is the minimum simple interest rate that Arthur needs to achieve his goal?
Nicole deposits $2,136 in a savings account paying 5.36% interest. To the nearest dollar, how much money does Nicole have in total after nine years?
Ike invests $7,660 in an account paying 7.27% simple interest annually. How much interest has Ike gained after four years?
If you invest $8,600 at a 3.95% simple annual interest rate, approximately how long will it take for you to have a total of $21,000?
Abigail has an account that pays 6.92% simple interest per year and wants to accumulate $5,896 in interest from this account over six years. How much money should Abigail invest in this account to meet this goal?
Which of the following investments will earn the smallest amount of interest?
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