Which question do i solve?
Answer:
hello :
(g/f)(3) = g(3)/f(3)
but : g(3) =3(3)+2 = 11
f(3) 2(3)-4 = 2
g/f)(3) = 11/2
for the first one set 3y+y=180 and y+x=180
the second one set w+y=180, 42+x=180, y+20=180, and 87+v
