During a four-week period, you worked the following hours: week 1- 363 /8 hr; week 2- 411 /4 hr; week 3- 401 /2 hr; week 4- 383 /8 hr what is the average number of hours you worked in one week? a. 393 /8 hr b. 381 /4 hr c. 391 /8 hr d. 383 /4 hr

The average number of hours can be calculated using the following rule:
average number of hours = total number of hours / total number of weeks

total number of hours = 36 3/8 + 41 1/4 + 40 1/2 + 38 3/8 = 313/2 hours
total number of weeks = 4 weeks

Average number of hours per week = (313/2) / (4) = 39 1/8 hour

Based on the above calculations, the correct answer is:
C. 39 1/8 hour

Do you need with the x value for the minimum? its always between the two intercepts for a parabola