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If f(x)=3(x=5)=4/x , what is f(a+2)

User Smaran
by
8.3k points

2 Answers

2 votes

Answer:


f(a+2)=3a+21+(4)/(a+2)

Explanation:

If
f(x)=3(x+5)+(4)/(x)

Then we have to find f(a + 2)

Now we replace x by (a + 2) in the given expression.

f(a + 2) = 3[(a + 2) + 5] +
(4)/(a+2)

= 3(a + 7) +
(4)/(a+2)

= 3a + 21 +
(4)/(a+2)

So the answer is
f(a+2)=3a+21+(4)/(a+2)

User Yausername
by
8.6k points
5 votes

f(x)=3(x+5)+(4)/(x)\\\\\text{substitute x=a+2 to the equation of the function}\\\\f(a+2)=3(a+2+5)+(4)/(a+2)=3(a+7)+(4)/(a+2)=3a+21+(4)/(a+2)
User Roee Gavirel
by
8.8k points

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