How to do this question pls help

What is not true about kl and mn? what is mn? (show your work)

What is the value of the expression below? 148+(-6)| + |– 35= 7|

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