When we have two functions f(x) and g(x) the composition is just evaluating one function in the other one.
Here the solution is: k( l(2) ) = 5
We have the functions:
k(x) = 2*x + 3
l(x) = x - 1
We want to get the composition:
k( l(2))
Let's start with the general composition, and then evaluate it:
k( l(x) ) = 2*l(x) + 3 = 2*(x - 1) + 3
k( l(x) ) = 2*(x - 1) + 3
Now we need to evaluate it in x = 2, then we get:
k( l(2) ) = 2*(2 - 1) + 3 = 2 + 3 = 5
k( l(2) ) = 5
If you want to learn more, you can read:
https://brainly.com/question/5614233
