Jesse bought 3 pounds of hamburger for $11.37. how much does 1 pound of hamburger cost?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Hannah paid $3.20 for 16 ounces of potato chips. hank paid $3.23 for 17 ounces of potato chips. who paid less per ounces?

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?