Which one of the following points lies on x-axis ?

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2