What is 2 8/10 + (-3.5) in decimal form, Show your work

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

What term makes it inconsistent y=2x - 4