Looking back on previous tests and quiz questions can benefit you in determining what to study because they a. will be used word for word on future tests c. both of these b. provide hints on what the teacher thinks is important d. none of these cant figure it !

(b) Provide hints on what the teacher thinks is important

Explanation: Clearly, the teacher selects what to ask in the tests, and it is plausible to think that (s)he will select problems that they deem important.

The teacher will know that students look at past tests, and so they will tend to change the wording and values in the tests to prevent plagiarism, so (a) is not the right choice.

40 is the final : )

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.