Tolong ajarkan sangat susah.

G(x)= 1/4(x+3)
a. bayangan 0
g(x)= 1/4(x+3)
g(0)=1/4(0+3)
=1/4(3)
=3/4
bayangan 5
g(x)= 1/4(x+3)
g(5)=1/4(5+3)
=1/4(8)
=8/4 = 2

b. g(x)= 1/4(x+3)
g(x)= 1/4(x+3) = 7
x+3=7.4
x+3=28
x=28-3
x=25
maaf kalau jwabannya salah..