The cash register at the ice cream store started the day with $120. during the day, the store earned $ 56 selling ice cream. the manager also paid for a delivery out of the cash register. at the end of the day, the cash register had $141. how much did the delivery cost?

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827