What is the volume of a rectangular prism with the following dimensions?

h = 2 ft, w = 5 ft, l = 7 ft

28 ft3
70 ft3
90 ft3
118 ft3

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Find the values of y: 3y^3(y^2+ 2/3y)=0

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?