A piece of wire is attached from the top of a 45 foot utility pole to a stake in the ground. If the angle of elevation from the stake to the top of the pole is 39 degrees, find the length of the wire

You are given the exponential function g(x) = 3 x . Which option below gives the formula for a new function h created by stretching g by a factor of 3 along the y-axis?

h(x) = 3x+1
h(x) = 3x-1
h(x) = x · 3x+1
h(x) = x · 3x-1

The correct answer is:
h(x) = x · 3x+1