In the year $2000,4\%$ of the Hispanic population in the U$.$S$.$ was Cuban$-$American. The total number of Cuban$-$Americans was $1,242,000.$ What was the Hispanic population in the U$.$S$.?(31,050,000)$

You are a businessperson entertaining two clients at dinner and charging the cost to your company. When you see the amount on the bill, $$258,$ you add a generous $25\%$ tip, How much is your tip? $(64\mathrm{.}5)$

When a man's granddaughter is born, he deposits $$2500$ in her name into an account which earns $7\%$ annual interest, with quarterly compounding $($that is$,$ an interest payment four times each year$).$ No other deposits or withdrawals are made. How much will be in the account on the granddaughter's ${21}^{st}$ birthday? What will be the total interest earned? $(10735\mathrm{.}72$ compound interest$)$

An account earns interest at a stated annual rate of $8\mathrm{.}4\%,$ with monthly compounding. An investor wants $$10,000$ in that account six years from now as a result of making one single deposit today. How much does she have to deposit to attain that goal? $(16524\mathrm{.}26$ compound interest$)$

Bobby has $$4000$ to invest. His local branch of Comrades' Bank offers two investment accounts. The first one is the compounding interest rate of $6\mathrm{.}4\%$ with quarterly compounding $($interest is compounded four times per year$)$ for $7$ years. Second is the simple interest rate of $7\%$ for $7$ years. What account should he choose? What would be the interests for both accounts? $(6238\mathrm{.}55$ with compound interest; $5960$ with simple interest$)$

Big Ed is planning for his retirement. Together, he and his employer contribute $$475$ per month to an investment account. That account earns interest at an annual rate of $7\mathrm{.}8\%,$ with monthly compounding. How much is in the account at the end of $41$ years? $(1,697,682\mathrm{.}8$ annuity$)$

Danielle plans on purchasing a new house for its listed price of $$210,000.$ She makes a down payment of $$20,000$ and borrows the rest of the money she needs at an annual rate of $8\mathrm{.}1\%,$ with monthly compounding. If she obtains a $30-$year loan, find her monthly payment. How much interest will she pay in $30$ years? $(1407\mathrm{.}42$ installment payment; Interset$=316671\mathrm{.}42)$

Suppose Danielle pays extra each month to pay the loan off in equal installments over $20$ years instead of $30.$ Find her monthly payment, and find out how much money she saves over the course of the loan. $(122411\mathrm{.}93)$