Hm. I have no idea what radius or any of this is. please help.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Will give let f(x)=2x and g(x)=[tex]2^{x}[/tex] graph the functions on the same coordinate plane. what are the solutions to the equation f(x)=g(x) ? enter your answers in the boxes x=[? ] or x=[? ]