Choose the equation that matches the graph.
A. 
+ 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: B
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Solve the problem.The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 54,000 miles has 
inches of tread left. How much tread will be left on a tire that has traveled 61,000 miles?
A. 57,600 in.
B. 
in.
C. 
in.
D. 
in.
Graph the ellipse and label the center.
+ 
= 1
A. C(3, 9)
B. C(10, 11)
C. C(-3, -9)
D. C(-10, -11)
Determine whether the statement is true or false.
The Leaning Tower of Pisa is not vertical, but if you know the angle of elevation ? to the top of the tower when you stand 25 feet away from it, you can find its height h using the formula
Solve the formula for the specified variable.A = 
bh for b
A. b = 
B. b = 
C. b = 
D. b = 