The velocity v(t) in the table below is increasing for
0\le t\le12 .

0 | 3 | 6 | 9 | 12 | |

27 | 30 | 31 | 35 | 40 |

**A.**
Find an upper estimate for the total distance traveled using

**B.**
Which of the two answers in part (A) is more accurate?

*(Be sure that you can explain why!)*

**C.**
Find a lower estimate for the total distance traveled using

distance traveled =

You can earn partial credit on this problem.