Subtract (6x^2-5+3)-(3x^2+8x-4)
A.3x^2-3x+7
B.3x^2+13x-1
C.3x^2+3x-1
D3x^2-13x+7

3x^2 - 13x - 1

Step-by-step explanation:

6x^2 - 5x (i think thats what you meant) + 3 - 3x^2 + 8x - 4

= 3x^2 - 13x - 1

➷ 1 + 2 + 2 + 2 + 3 + 3 + 3 + 3 + 4 + 4 + 4 + 4 + 5 = 40

Divide this values by the number of quizzes taken

Number of quizzes taken = 13

40/13 = 3.076923

The mean score is 3.076923 (if you have to round, then do so accordingly)

➶ Hope This Helps You!

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