Mr lim read 3 books in 2 hours. he took the same amount of time to read the first two books. he took 15 minutes longer to read the third book than the first. how many minutes did he take to read the third book?

Average acceleration: i have no idea how to do this.

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π