Can someone please explain this to me, idk if I got it right & I'm not too sure how to solve it. What is the vector that results from transforming a by the transformation matrix?

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

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?

Find all the angles that satisfy the equation cos(θ)=32