Find an equation for the hyperbola described.Vertices at (0, ±10); asymptotes at y = ± 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: A
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Solve the problem.A construction crane lifts a 100-lb bucket originally containing 140 lb of sand at a constant rate. The sand leaks out at a constant rate so that there is only 70 lb of sand left when the crane reaches a height of 90 feet. How much work is done by the crane?
A. 3375 ft ? lb B. 18,450 ft ? lb C. 21,600 ft ? lb D. 9450 ft ? lb
Find the intercepts of the circle. Round to the nearest hundredth, when necessary.(x + 4)2 + (y - 2)2 = 28
A. The two x-intercepts are x ? 1.66 and x ? -9.66, and the two y-intercepts are y ? 8.63 and y ? -4.63. B. The two x-intercepts are x ? 8.9 and x ? -0.9, and the two y-intercepts are y ? 1.46 and y ? -5.46. C. There are no intercepts. D. The two x-intercepts are x ? 0.9 and x ? -8.9, and the two y-intercepts are y ? 5.46 and y ? -1.46.
Insert the symbol < or > to make the statement true.-17 
-27
A. -17 > -27 B. -17 < -27
Solve the problem.The graph below shows the total sales of houses in a town from 2000 to 2005. The graph also shows the sale of houses in the summer , S, and in the other times of the year, Y.
Estimate (S+Y)(2002).
A. 64 B. 53 C. 59 D. 67