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Answer: C) I and II only</h3>
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Work Shown:
Part I

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Part II

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Part III

The answer is 650 because 100 * 5 = 500 and 50 * 3 = 150 and 500 + 150 = 650
I'm pretty sure it would have to be 155. Considering a flat line has an angle of 180 and if you subtract 180 from 25 you get 155.
Answer:
B and C
Step-by-step explanation:
To figure out the average of all of the scores, you add all of the numbers together and then divide by how many numbers there are. The average shows about how well they did. Anne's friends average was 90 and was higher than Joan's friends average which was 75. Then the lowest score was definitely 78. So the answer would be B and C.