Question

Evaluate the expression for x = 3 3/4

8x + 8

A. 30
B. 128
C. 14
D. 38

Answer 1

x = 3 3/4 = 3 + 3 / 4 = 12 / 4 + 3 / 4 = 15 / 4

8 x + 8 = 8 ∙ 15 / 4 + 8 = 4 ∙ 2 ∙ 15 / 4 + 8 = 2 ∙ 15 + 8 = 30 + 8 = 38

OR

8 x + 8 = 8 ( x + 1 ) = 8 ∙ ( 15 / 4 + 1 ) = 8 ∙ ( 15 / 4 + 4 / 4 ) =

8 ∙ 19 / 4 = 4 ∙ 2 ∙ 19 / 4 = 2 ∙ 19 = 38

Answer 2

So D

Answer 3

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Answer 4

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Answer 5

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Answer 6

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Answer 7

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Answer 8

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Answer 9

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Answer 10

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