Simplify 7x + 2x + 5y - 2y
9x + 3y
12xy
9x + 7y

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project