Expand and simplify 2(2x-3)+2(3x+4)

Need on this one asap im almost done with this subject

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

How do you write 600 as a product of its prime factors (index! )