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)?

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.