Add or subtract as indicated.4.969 + (-7.199)
A. -12.068
B. -12.168
C. 35.772
D. -2.23
Answer: D
Mathematics
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Solve the problem.Assume the total revenue from the sale of x items is given by 
while the total cost to produce x items is 
Find the approximate number of items that should be manufactured so that profit, 
is maximum.
A. 228 items B. 178 items C. 56 items D. 128 items
Mathematics
Multiply.
A. 4988 B. 5088 C. 5188 D. 5098
Mathematics
Solve. x + y + z = 7 x - y + 2z = 75x + y + z = 11
A. (4, 1, 2) B. (4, 2, 1) C. (1, 2, 4) D. (1, 4, 2)
Mathematics
Recognize the elementary row operation used and determine the missing entry.
? 
A. 6
B. -6
C. - 
D. 
Mathematics