Q. [+40]Jika f(x) = 2x + 5Tentukan f(4) ​

Jawaban:

f(x) = 2x + 5.

f(4) = 2(4) + 5

f(4) = 8 + 5

f(4) = 13

Cara Jawaban =

1..)

f (x) = 2x + 5.

f (4) = 2.4 + 5.

f (4) = 2 x 4 + 5.

f (4) = 8 + 5 = 13.