-5 3/4 - 3 1/2 = ? Solve please!

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two