Solve the equation.2x + 2
- 12 = 0
A. 
B. {4}
C. 
D. {2}
Answer: B
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Without using a calculator, determine the value of the trigonometric function or state that the value is undefined.csc (1020°)
A. - 
B. - 
C. - 
D. - 
Solve the problem.Use the formula d = 10 log (I/I0), where the loudness of a sound in decibels is determined by I, the number of watt/m2 produced by the soundwave, and 
watt/m2. What is the intensity in watt/m2 of a noise measured at 84 decibels? Round to the nearest tenth.
A. 2.5 × 10-3 watt/m2 B. 2.5 × 10-4 watt/m2 C. 8.4 × 10-10 watt/m2 D. 4.4 × 1015 watt/m2
Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.sin ? = - 
, ? in quadrant IV Find cos 2?.
A. - 
B. 
C. 
D. - 
Use a calculator to find the approximate value of the expression rounded to two decimal places.csc 26°
A. 1.23 B. 2.28 C. 2.36 D. 1.31