Fungsi f dinyatakan dengan rumus g(x) = 8-5x. Jika g(p) =23 dan g (2)= q, makan nilai p+q adalah....

f( x ) = 8 - 5x
g( p) = 8 - 5( p) = 23
= 8- 5p = 23
-5p = 23 - 8
-5p= 15
p = - 3
g ( 2 )= 8 - 5 ( 2) = q
8 - 10 = q
- 2 = q
p = - 3
q = - 2
jadi p + q = - 3 + ( - 2) = - 5