Solve the equation.
x = 
A. 
B. {3}
C. 
D. {-3}
Answer: D
Mathematics
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Solve the problem.Suppose c(x) = x3 - 20x2 + 30,000x is the cost of manufacturing x items. Find a production level that will minimize the average cost of making x items.
A. 9 items B. 12 items C. 11 items D. 10 items
Mathematics
Find the missing parts of the triangle.B = 27.4°b = 11.68a = 24.0
A. A = 14.7°, C = 138.9°, c = 39.68 B. A = 12.7°, C = 138.9°, c = 37.68 C. A = 13.7°, C = 138.9°, c = 35.68 D. No solution
Mathematics
Solve the inequality and graph. Express your answer in interval notation.4x - 4 > 3x - 1
A. [3, ?)
B. (3, ?)
C. (-5, ?)
D. (-?, 3]
Mathematics
Fill in the blank with one of the words or phrases listed below. 
Use the facts below. 2 ? 3 = 6
4 + 17 = 21
20 - 9 = 11
The 4 above is called a(n) 
.
A. subtrahend B. sum C. factor D. addend
Mathematics