You can buy a DVD player for $250 cash or pay$50 down and the balance in 12 monthly payments of $18. What is the installment price? By what percent would your installment price be greater than the cash price?

Find the ordinary interest from March 5 to May 12 on $\$ 5,500$ at $8 \%$ interest.

Brandon Jones paid $\$ 305.25$ in interest on a 2-year note for $\$ 1,850$. Find the rate of interest paid.

You can buy a product for $750 cash or pay$150 down and the balance in 12 monthly payments of $61.25. What is the installment price? By what percent would your installment price be greater than the cash price?

Mohamed Jatmiko paid $420 in interest on a 6-month note for$5,600. Find the rate of interest he paid.

Winston Chambers borrows $3,000 at 7% exact interest for 43 days. What interest will he pay on the loan?

Find the exact interest to the nearest cent. Then find the ordinary interest to the nearest cent.

$1,450 @ 7% for 100 days

Tara Long borrowed $10,000 for 180 days. She paid exact interest at an annual rate of 12 %.

Estimate the interest Tara owed.

Tara Long borrowed $10,000 for 180 days. She paid exact interest at an annual rate of 12 %.

What is the exact amount of interest she had to pay?

Heidi Cortez borrowed $\$ 35,000$ from National Bank of Springfield to remodel her store. The maturity value of the loan was $\$ 35,656.25$. The ordinary interest loan was for $90$ days. What was the interest rate of Heidi's loan?

The formula for the amount of money earned in one year is $A=P(1+r)$, where $A$ is the amount of money earned, $P$ is the principal, and $r$ is the interest rate.

Solve the equation for $r$.

When interest at a rate r is compounded on a principal P so that the amount after one year is the interest is said to be __________ __________ .

Find the simple interest rate for each loan. $800 is borrowed; the amount owed after 3 months is$900.

Find the total amount owed after 6 months on a loan of $900 at an annual simple interest rate of 8.5%.