Solve.Last year, Justin's average credit card bill was $138.83. Last month, his credit card bill was $193.91. How much above last year's average was last month's bill?
A. $55.08
B. $55.18
C. $45.08
D. $56.08
Answer: A
Mathematics
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A. 22
B. 2
C. 2
D. 244
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Find a value for the constant a so that f(x) = ax2 models the data. 
A. a = 
B. a = 5
C. a = 9
D. a = 
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Solve.7x + 7y + z = 1 x + 8y + 8z = 89x + y + 9z = 9
A. (-1, 1, 1) B. (1, -1, 1) C. (0, 1, 0) D. (0, 0, 1)
Mathematics
Write in decimal notation.Six and five hundred sixteen ten-thousandths
A. .60516 B. 6.0516 C. 6.00516 D. 6.516
Mathematics