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= 15 - 2
= 13
f(-4) = 5(-4) - 2
= -20 -2
= -22
c. f(x) = 5x - 2 = 28
5x = 30
x= 6
maaf klo salah
a. f(x) = ax-b
b. f(3) = 5(3)-2
= 15-2
= 13
f(-4) = 5(-4)-2
= -20-2
= -22
c. f(x) = 28
⇒ 5x - 2 = 28
5x = 28+2
5x = 30
x = 30/5
x = 6