How much heavier is a 9 1/8 pound box than a 2 5/6 pound box?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

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?