Question

10. Diketahui rumus fungsi f(x) = 3x + 4 dan g(x) = 5x− 3 . Jika f(n) = −8, nilai
dari g(n) adalah

Answer 1

f(x) = 3x + 4

f(n) = 3(n) + 4

-8 = 3n + 4

-8 - 4 = 3n

3n = -12

n = -12/3

n = -4

g(x) = 5x - 3

g(n) = 5(n) - 3

g(-4) = 5(-4) - 3

g(-4) = -20 - 3

g(-4) = -23