Factor the following expression. 15x + 9y

A)
24xy
C)
3(5x + 3y)
B)
xy + 24
D)
3xy(5 + 3)

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265