48x^ 4-72x^6 y^2/-12x^2y

i hope i even wrote it correctly

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

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

Are the corresponding angles congruent? explain why or why not.