The function g(x)=8(4x) is reflected across the x-axis to create f(x). on a coordinate plane, 2 exponential functions are shown. function f (x) approaches y = 0 in quadrant 3 and decreases into quadrant 4. it crosses the y-axis at (0, negative 8). function g (x) approaches y = 0 in quadrant 2 and increases into quadrant 1. it crosses the y-axis at (0, 8). what is the equation of f(x)? f(x)=8(4)x f(x)=−8(4)x f(x)=8 f(x)=−8