Simplify 81-19 +218-412

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

What is the solution to the equation e3x=12? round your answer to the nearest hundredth

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)