Answered

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Giving f(x)=8x -15, find x when f(x)=9

Sagot :

Answer:

3

Step-by-step explanation:

f(x)=8x-15 and f(x)=9

9=8x-15

add 15 to both sides

24=8x

divide both sides by 8

x=3

danielafuentes

Answer:

f(9)=57

Step-by-step explanation:

f(x)=8x-15

f(9)=8*9-15

f(9)= 72-15

f(9)= 57

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