Please help me its a timed test

Solve 2^x=32 and rewrite this equation in a logarithmic form

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

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5