Question

Please answer!!!!!!!

Answer 1

Answer: Option B

`f(x) = 3(a +7)+(4)/((a + 2))`

Explanation:

We have the following function

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

To find
`f (a + 2)` we must evaluate the function at
`x = (a + 2)`

Then we change the variable "x" to (a + 2)

`f(x) = 3((a + 2)+5)+(4)/((a + 2))`

now simplify the expression

`f(x) = 3(a +7)+(4)/((a + 2))`

Finally the answer is the option B

Answer 2

B

Explanation:

To find f(a+2), we need to plug in "a+2" into x of the function given. Let's do this:

`f(x)=3(x+5)+(4)/(x)\\f(a+2)=3((a+2)+5)+(4)/((a+2))\\f(a+2)=3(a+7)+(4)/(a+2)\\`

We can further simplify, but we already have our answer in form of the answer choices, answer choice B is right.