Kim is 15, kim's father is 39. in how many years will kims father be twice as old as kim?

This is different from the first one can someone me

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

Are the corresponding angles congruent? explain why or why not.