Solve the problem.If Alison's company charged $146.72 for 7 hours of work, how much did they charge per hour?
A. $7.00/hour
B. $27.96/hour
C. $20.96/hour
D. $24.45/hour
Answer: C
Mathematics
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Solve the problem.The lower edge of a dam is defined by the parabola (see figure). Use a coordinate system with y = 0 at the bottom of the dam to determine the total force on the dam. Lengths are measured in meters. 
A. 60,963,840 N B. 121,927,680 N C. 13,547,520 N D. 243,855,360 N
Mathematics
Provide an appropriate response.Determine whether the graph of x = y2 - 4 is symmetric about the x-axis, the y-axis, the origin, or the line y = x.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Factor:
Mathematics
Subtract. Simplify, if possible.11
- 
A. 9
B. 10
C. 10
D. 11
Mathematics