Sara and three friends plan to evenly split the cost of dinner. If the bill is $64 and they leave a 20% tip, how much change will Sara receive when she pays her portion with a $20 bill?

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e

Y+ 2/y is it a polynomial in one variable or not? and if so, why?