Hurry! simplify the following expression. (74x + 84y) - (5x + 35y)

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

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

Can someone me out here number 4 plz