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9. Find the value of the function using the given value of x:
f(x) = 5x -5, when x is 4.
A. -20
C.-15
B. 15
D. 20​


Sagot :

Answer:

the answer is c. 15

Step-by-step explanation:

f(x)= 5x-5 ,when x is 4

= 5(4)-5

= 20-5

=15