Question

At Priscilla's school, the final grade for her Calculus course is weighted as follows:

Answer 1

Priscilla's weighted average grade in her Calculus course is 77.5%.

Calculating weighted average

In order to determine the weighted average, you will multiply each contributor by its individual weight and then take the sum as shown:

Weighted average = 0.50(87%) +0.30(100%) +0.20(20%)

Weighted average   = 43.5% +30% +4%

Weighted average   = 77.5%

Therefore Priscilla's weighted average grade in her Calculus course is 77.5%.

Learn more on weighted average here: brainly.com/question/24215541

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Answer 2

Answer:

  77.5%

Step-by-step explanation:

The weighted average is found by multiplying each contributor by its weight, and summing the products.

Application

Priscilla's weighted average is ...

  0.50(87%) +0.30(100%) +0.20(20%)

  = 43.5% +30% +4%

  = 77.5%

Priscilla's weighted average grade in her Calculus course is 77.5%.

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Additional comment

Her solid C grade could have been an A grade (93.5%) if she had done as well on her homework as she did on quizzes.