Baru jam segini udh laper .-. f(x) = 10x – 9x + 8xf(5) = ​

f(x) = 10x – 9x + 8x

f(x) = (10 – 9)x + 8x

f(x) = 1x + 8x

f(x) = (1 + 8)x

f(x) = 9x

f(5) = 9(5)

f(5) = 45