Question

Jika f(x)=8x-2 dan f(5)=36, maka f(x)=....
A. 8^x2 –2x – 159
B. 8^x2 –2x – 154
C. 4^x2 – 2x – 74
D. 4^x2 – 2x – 54
E. 4^x2 – 3x - 59

Answer 1

F(x) = 8x² - 2x + c
f(5) = 36
36 = 8(25) - 10 + c
c = -154

maka f(x) = 8x² - 2x - 154 (B)