In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 17% of your total grade, each major test is worth 21.5%, and the final exam is worth 40%. Compute the weighted average for the following scores: 66 on the lab, 67 on the first major test, 82 on the second major test, and 64 on the final exam.