Given the functions f (x) = 7x + 13 and g (x) = x + 2, which of the following functions represents f[g (x) ] correctly?

Question

Mathematics

Mohammad Brooks

19 July, 15:31

Given the functions f (x) = 7x + 13 and g (x) = x + 2, which of the following functions represents f[g (x) ] correctly?

+1

Answers (1)

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Davis Branch · Answer 1

f[g (x) ] = 7x + 27

Step-by-step explanation:

g (x) = x + 2,

f (x) = 7x + 13,

f[g (x) ] means you substitute the value of g (x) into the variable of f (x);

Which is 7 (x+2) + 13 = 7x + 14 + 13

= 7x + 27