12. first and foremost, supervisors a. counsel students on personal issues. b. have the ability to teach the job you will be doing. c. advocate to make the team more efficient. d. control the environment.

I think it is c, they advocate and help to make the team more efficient

have the ability to teach the job you will be doing.

To solve this integral, what you can do is split it up as follows: (1) ∫40(x2−4)dx=∫40(x2)dx−∫40(4)dx. to integrate  4  as an  indefinite integral, a good rule of thumb is  by  an equation below  for  polynomials; . (2) ∫xa=xa+1a+1+c , where a is any number. c denotes some constant that is crucial when doing 

Awould be the correct answer