After 88 years, Amanda's account earned $1500$⁢1500 in interest. If the interest rate (in decimal form) is 0.080.08, how much did Amanda initially invest?Amanda's Bank StatementInterest Earned $1500$⁢1500Rate 0.080.08Time 88 YearsPrincipal Invested ?Step 3 of 3: Finally, solve the problem by substituting in the appropriate values. (Round your answer to 2 decimal places if necessary.)

After 88 years, Susan's account earned $900$⁢900 in interest. If the interest rate (in decimal form) is 0.10.1, how much did Susan initially invest?Susan's Bank StatementInterest Earned $900$⁢900Rate 0.10.1Time 88 YearsPrincipal Invested ?Step 3 of 3: Finally, solve the problem by substituting in the appropriate values. (Round your answer to 2 decimal places if necessary.)

Amanda invested $9000 in a fund for 5 years and was paid simple interest. The total interest that she received on the investment was $1800. As a percentage, what was the annual interest rate of her investment?

David invested $3200 under a compound interest of 16% per annum in JAKE Investment Bank. If the interest rate was compounded half-yearly, then find the amount received by him after a year.  Ops:   A. $4230.8    B. $3214.5    C. $4370.4    D. $3732.48

Last year Sarah invested money in two accounts. The first account had an interest rate of 4%4% and the second account had an interest rate of 3%3%. If she invested $700$⁢700 more in the first account than the second and her total interest income was $392$⁢392, how much did she invest at each rate?

Naomi invested $860 in an account paying an interest rate of 3, start fraction, 3, divided by, 4, end fraction3 43​ % compounded monthly. Matthew invested $860 in an account paying an interest rate of 4, one quarter4 41​ % compounded annually. After 10 years, how much more money would Matthew have in his account than Naomi, to the nearest dollar?