Please help I kind of understand but not fully ALSO 10 POINTS PLEASE HELP

Find the given elements if matrix d:

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

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