What is the equation of the graph below?

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.

When is g(x) = 0 for the function g(x) = 5.23x + 4?

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =