Simplify the expression by using the order of operations.7 - 4 + 3 ? 5 - 5 ? 
÷ 
A. 9
B. 13
C. 8
D. 7
Answer: C
Mathematics
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Eliminate the parameter t in the following:
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Combine like terms.-(-5m) - (-3n)
A. -8mn B. 5m + 3n C. 8mn D. 5m - 3n
Mathematics
Find the sum.12 + (-1) + 10 + (-14)
A. 7 B. 15 C. -13 D. 37
Mathematics
If the total cost function for a product is 
, where x is the number of items produced, what is the total cost of producing 50 units? Round your answer to the nearest cent.
?
A. $812.01 B. $948.41 C. $52.23 D. $801.65 E. $813.59
Mathematics