For f(x) = x2 + 2, identify the effect on the graph of replacing f(x) f(x) + k, where k > 0 f(x) + k, where k < 0 kf(x) where k > 1 kf(x) where 0 < k < 1 kf(x) where k = -1

What number is 7 units left of -15?

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

The radius of the sphere is 10 units .what is the approximate volume of the sphere use π=3.14