2y^2-4y-8=-y+y i don't get it : ( quadratic equation

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?

Round each of the decimals to the nearest hundredth a. 0.596 b. 4.245 c. 53.6843 d. 17.999