A. p(x) intersects g(x) at (3, -2). The solution is x=3.
B. It isn't clear what is intended here. A function doesn't have a solution. An equation has a solution.
See parts A and C.
g(3) = -2
g(0) = 4
Also, from the graph ...
g(2) = 0
C. g(x) intersects f(x) at (0, 4). The solution is x=0.