Where is the opposite of 8 located on a number line?

It says factor each expression completely 8y+48

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers