Need urgent help please !!!

Part A:Explain why the x-coordinates of the points where the graphs of the equations y = 2^xand y = 4^{x + 3}intersect are the solutions of the equation 2^x= 4^{x + 3}.

Part B:Make tables to find the solution to 2^x= 4^{x + 3}. Take the integer values of x only between 3 and 3.

Part C:How can you solve the equation 2^x= 4^{x + 3}graphically?