Verified Answer :

Willchemistry

f(x)  = 2 x - 5

15 = 2 x - 5

2 x - 5 = 15

2 x = 15 + 5

2 x = 20

x = 20 / 2

x = 10

hope this helps!

buenosdavid

Answer:

the answer is 10

Step-by-step explanation:

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