Simplify the expression. Assume that all variables are positive when they appear.
A. -4x12y18
B. 16x8y12
C. -4x8y12
D. 4x8y12
Answer: C
Mathematics
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Provide an appropriate response.What is the range of the function y = 
x?
A. [0, ?) B. (-?, 0) C. (-?, ?) D. (0, ?)
Mathematics
Find the break-even point for the total-cost and total-revenue functions.C(x) = 20x + 312,000R(x) = 85x
A. (4900 units, $416,500) B. (4700 units, $399,500) C. (5000 units, $425,000) D. (4800 units, $408,000)
Mathematics
Find the quadratic function y = f(x) that has the given vertex and whose graph passes through the given point.(-3, -3)
A. y = 3x2
B. y = - 3x2
C. y = 
x2
D. y = - 
x2
Mathematics
Solve the problem. Use 3.14 for ?.The outfield wall in a baseball park is in the shape of a quarter circle. If the radius of the circle is 8 ft, how long is the wall?
A. 10.56 ft B. 12.56 ft C. 6.28 ft D. 25.12 ft
Mathematics