Fractions fractions oh how i hate! solve this problem. i am so confused on how to solve these problems. what is the strategy for this?

What is the y-intercept of the line given by the equation

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

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.