Free points ;) come and get em while its hot!

Can someone me and do the problem plz so i can understand it more better

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

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?