Question

Given the function k described by k (x) = x + 18, how do you find k(-11)?

Answer 1

`k(-11)=7`

Explanation:

To find the value of a function for the specified argument you have to replace every occurence of the variable in the function formula with the supplied value:

`k(color(red)(-11))=color(red)(-11)+18=7`

As you can see every occurence of variable `x` is replaces with number `-11`