In your biology class, your final grade is based on several things: a lab score, score 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 25% of your total grade, each major test is worth 22.5%, and the final exam is worth 30%. Compute the weighted average for the following scores: 92 on the lab, 83 on the first major test, 94 on the second major test, and 84 on the final exam. Round your answer to the nearest hundredth.

86.02
88.42
88.02
85.55
90.42

.25(92) + .225(83) + .225(94) + .3(84) = ?

87.65

88.02

To compute the weighted average, you need to multiply each score by its corresponding weight, and then sum up the results.

Let's calculate each component of the weighted average:

Lab score: 92 (out of 100) * 25% = 23
First major test score: 83 (out of 100) * 22.5% = 18.675
Second major test score: 94 (out of 100) * 22.5% = 21.15
Final exam score: 84 (out of 100) * 30% = 25.2

Now add up the scores:
23 + 18.675 + 21.15 + 25.2 = 88.025

Rounded to the nearest hundredth, the weighted average is 88.02.

Therefore, the correct answer is 88.02.