How can me with this operation about pre-calculus.
simplify

If we want to compute , we have to substitute every occurrence of with in the definition of the function:

Similarly, computing means to substitute the input with 2:

So, we have

And finally

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b