Only problem I need help on. Please help on B, thank you.

Only Problem I Need Help On Please Help On B Thank You class=

Answer :

Answer:

f'(8) = 47

Step-by-step explanation:

f(x) = 3x² - x

f'(x) = 6x - 1

f'(8) = 6(8) - 1 = 48 - 1 = 47