If f(x+7)=5x+5 for all values of x, which of the following is equal to f(2x) ?

A)
B)
C)
D)

 


 

Comments (1)

This is the only concept that continually baffles me each time. There is sort of a blind spot here. I wish I could be directed toward resources that would clarify these types of f(x+a) conversion to f(x) then back to another function again

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