How many boxes would i shade? do i have to divide?

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

Give me the equations of two lines that have the same slope but are not parallel.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0