Question

Tolong no 10, 12, 13, 14, 15, 16 ya.
Pakai CARA!
makasih

Answer 1

10. )f(x) = 2x + 1
f(a)= 2.a+ 1 = 9
2a + 1 =9
2a= 9 - 1
a = 8 /2 = 4
jadi 5a = 5.4 = b. 20

14. f(x) = 4 - 2x
domain : (1,2,3)
range ....?

f(1) = 4 - 2.1
4 - 2 = 2
f(2) =4 - 2.2
4 - 4 = 0
f(3) =4 - 2.3
4 - 6 = -2
jadi rangenya b . {-2,0,2}

maaf ya taunya cuman segini