91Ó°ÊÓ

In the following exercises, solve the problem using the simple interest formula. Find the rate if a principal of \(\$ 5,400\) earned \(\$ 432\) interest in 2 years.

In the following exercises, solve the problem using the simple interest formula. Find the rate if a principal of \(\$ 2,600\) earned \(\$ 468\) interest in 6 years.

In the following exercises, solve the problem using the simple interest formula. Find the rate if a principal of \(\$ 11,000\) earned \(\$ 1,815\) interest in 3 years.

In the following exercises, solve the problem using the simple interest formula. Find the rate if a principal of \(\$ 8,500\) earned \(\$ 3,230\) interest in 4 years.

In the following exercises, solve the problem using the simple interest formula. Casey deposited \(\$ 1,450\) in a bank account with interest rate 4\(\% .\) How much interest was earned in 2 years?

In the following exercises, solve the problem using the simple interest formula. Terrence deposited \(\$ 5,720\) in a bank account with interest rate 6\(\%\) . How much interest was earned in 4 years?

In the following exercises, solve the problem using the simple interest formula. Robin deposited \(\$ 31,000\) in a bank account with interest rate 5.2\(\% .\) How much interest was earned in 3 years?

In the following exercises, solve the problem using the simple interest formula. Carleen deposited \(\$ 16,400\) in a bank account with interest rate 3.9\(\% .\) How much interest was earned in 8 years?

In the following exercises, solve the problem using the simple interest formula. Hilaria borrowed \(\$ 8,000\) from her grandfather to pay for college. Five years later, she paid him back the \(\$ 8,000, \quad\) plus \(\$ 1,200\) interest. What was the rate of interest?

In the following exercises, solve the problem using the simple interest formula. Kenneth lent his niece \(\$ 1,200\) to buy a computer. Two years later, she paid him back the \(\$ 1,200,\) plus \(\$ 96\) interest. What was the rate of interest?