Question

Question #46977

Answer 1

`W(-7) = - 54`

Explanation:

You know that for any value of `n`, the function `W(n)` returns the value

`W(n) = - n^2 - 5`

Notice that the minus sign added in front of `n^2` is not being squared! In other words, you don't have

`W(-7) = (-n)^2 - 5 = n^2 - 5`

This means that in order to get the output of the function for a given value of `n`, all you have to do is to replace `n` with the given value and calculate the value of the expression.

In your case, you want to find the output of the function for `n = -7`, so simply replace `n` with `-7`.

You will find

`W(-7) = - (-7)^2 - 5`

`W(-7) = - 49 - 5`

`W(-7) = - 54`