Anybody good in geometry and know how to do this? Free Brainliest and points!

Ineed i been stuck on this question since yesterday

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

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*