Match the graph to the correct inequality.
A. x ? 2
B. y ? 2
C. y ? 2
D. x ? 2
Answer: A
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Solve the problem.The viewing angle for a camera is given (in degrees) by 
where x is the focal length of the lens. The focal length on most adjustable cameras is marked in millimeters on the lense mount. Find the viewing angle, in degrees, if the focal length is 180 millimeters.
A. 135.0° B. 17.1° C. 5.7° D. 252.9°
Use identities to simplify the expression. Do not use a calculator.
A. cos 15° B. cot 15° C. tan 15° D. sin 15°
Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function 
where k is a constant and t is the time in years. If the current population is 22,000, in how many years is the population expected to be 55,000? Round to the nearest year.
A. 6 yr B. 76 yr C. 11 yr D. 5 yr
Establish the identity.sin
= -cos ?
What will be an ideal response?