If $\$16716$$16716 of simple interest was earned in $7$7 years, how much interest was earned each:

year?

month?

Calculate the simple interest earned on an investment of $\$2540$$2540 at $9%$9% p.a. for $2$2 years.

Give your answer to the nearest cent.

Calculate the simple interest on a loan of $\$8000$$8000 at $8%$8% p.a. for $6$6 years.

Give the answer to the nearest dollar.

Calculate the simple interest earned on an investment of $\$1050$$1050 at a semiannual rate of $1.1%$1.1% for $9$9 years.

Write your answer to the nearest cent.

models relevant financial situations using appropriate tools