Question

F(x) = x + 1, find f(x+3)

Answer 1

Answer: f(x+3)=x+4

Explanation:

f(x)=x+1

f(x+3)=(x+3)+1 ⇔ substitute x

f(x+3)=x+3+1 ⇔ take of parentheses

f(x+3)=x+4 ⇔ simplify

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Answer 2

Explanation:

f(x) = x + 1, find f(x+3)

f(x+3) = x + 3 + 1 = x + 4