Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = 
, tan ? < 0Find sin(2?).
A. 
B. - 
C. 
D. 
Answer: A
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Solve the problem.The price of a certain commodity is a function of supply and demand. The table below shows the price of the commodity per barrel between 2012 and 2017. Find the average annual rate of change between 2015 and 2017.
A. $3.00 per year B. -$12.00 per year C. $12.00 per year D. $24.00 per year
Use the following information to solve the problem. An airport is located at point O. A short-range radar tower is located at point R. The maximum range at which the radar can detect a plane is 4 miles from point R.Assume that R is 2 miles east of O and 9 miles north of O. In other words, R is located at the point 
. An airplane is flying parallel to and 1 miles east of the north axis. (In other words, the plane is flying along the path 
.) What is the greatest distance north of the airport at which the plane can still be detected by the radar tower at R? Round your
answer to the nearest tenth of a mile. A. 5.1 miles B. 12 miles C. 11.2 miles D. 12.9 miles
Simplify the exponential expression.(5x-6y3z-2)-3
A. 
B. 
C. 
D. 
Solve the problem using your calculator.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Use linear regression to find a linear function that predicts a student's course grade as a function of the number of hours spent in lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 88.6 - 1.86x B. y = 1.86 + 88.6x C. y = 44.3 + 0.930x D. y = 0.930 + 44.3x