Easy points if u know it please help

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

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose