Solve the equation.31 + 2x = 27
A. {9}
B. {3}
C. {1}
D. {-1}
Answer: C
Mathematics
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A. - 
B. 
C. - 
D. 
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A. 1
B. 
C. 0
D. 
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Multiply.3(4)
A. 2 B. 120 C. 12 D. 9
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Solve the problem.A student earned scores of 85, 83, 90, 94, 88, and 84 on the first six tests in a biology class. What score is needed on the seventh test to produce an 86 average?
A. 81 B. 79 C. 78 D. 80
Mathematics