Solve the problem.Find the missing length in the similar triangles.
A. x = 12
B. x = 9
C. x = 3
D. x = 6
Answer: B
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Find the exact value of the following expression without using a calculator.tan 45°
A. 
B. 
C. 
D. 1
Solve the problem.A ball is thrown upward with an initial velocity of 21 meters per second from a cliff that is 
high. The height of the ball is given by the quadratic equation 
where h is in meters and t is the time in seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Round your answer to the nearest tenth of a second.
A. 7.6 sec B. 7.3 sec C. 7.0 sec D. 10.3 sec
The graph of a one-to-one function f is given. Sketch the graph of the inverse function f-1, on the same set of axes. Use a dashed line for the inverse.
A. 
B. 
C. 
D. 
Solve the problem.A comet follows the hyperbolic path described by 
- 
= 1, where x and y are in millions. If the sun is the focus of the path, how close to the sun is the vertex of the path? 
A. 6.6 million B. 43 million C. 5 million D. 1.6 million