What is the value of y when line m is parallel to line n?

On a piece of paper graph f(x)=5•(0.4)^x

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

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