Hi can u help me with my math homework

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

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

Find the solution set for this equation: t^2+7t=0 separate the two values with a comma.