Find the exact value. If the value of the function is not defined, write undefined.csc 
A. 2
B. Undefined
C. 0
D. -1
Answer: D
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Solve the problem.The graph depicts a person's speed y, in miles per hour, during a 15-minute period of driving. Estimate and interpret the turning points.
A. The first turning point is at approximately (6, 60). This is where the person's speed first stops increasing and starts to decrease. The second turning point is at approximately 
. This is where the person's speed stops decreasing and starts to increase again.
B. The first turning point is at approximately (7, 60). This is where the person's speed first stops increasing and starts to decrease. The second turning point is at approximately (13, 48). This is where the person's speed stops decreasing and starts to increase again.
C. The first turning point is at approximately (5, 60). This is where the person's distance from the starting point stops increasing and starts to decrease. The second turning point is at approximately (11, 48). This is where the person's distance from the starting point stops decreasing and starts to increase again.
D. The first turning point is at approximately (6, 60). This is where the person's distance from the starting point stops increasing and starts to decrease. The second turning point is at approximately (12, 48). This is where the person's distance from the starting point stops decreasing and starts to increase again.
Write the vector in the form 
. Round values to the nearest hundredth when appropriate.
A. 
B. 
C. 
D. 
Solve the triangle. Approximate values to the nearest tenth when appropriate.? = 63°30', a = 12.2, c = 7.8
A. b = 13.2, ? = 73°7', ? = 37°23' B. b = 12.2, ? = 75°7', ? = 41°23' C. b = 11.2, ? = 77°7', ? = 39°23' D. No solution
Determine whether or not the number is written in scientific notation.0.0007
A. in scientific notation B. not in scientific notation