QR=7x-20 and TS=3x what is x

Determine whether the angles in each given pair are coterminal. 744°, -336°

Ineed with number 17 i don’t get it at alll

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