I need help for this assignment.

Which is the graph of the function y=2(4)^x

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

How do i put 3(x+7) in distributive property