Impasto. Hope this helps!
Answer:

Explanation:
We'll be using u-substitution for this problem.
Let

Substitute

Split the fraction

Move the constants out

Simplify

Integrate

Substitute

Answer:
Endorsement
Explanation:
The term that refers to this is known as an Endorsement. This can be for any product or service and generally involves a celebrity or public figure that in one way or another relates to the product or service being advertised. One example of this would be famous soccer icon Christiano Ronaldo publicly supporting and appearing in Nike advertisements showing off their new soccer cleats.
Answer:
A. It contains the string "f1"