Find all solutions of the equation in the interval [0, 2?).cos 2x = 
A. 
B. 
, 
, 
, 
C. 
D. 
, 
Answer: B
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Find the length of the circular arc associated with the angle ?. An angle of measure 
in a circle of radius 8
A. 
?
B. 
C. 
D. 
?
Write percents as decimals and decimals as percents.The telethon raised 862% of its anticipated goal.
A. 8.62 B. 862 C. 86.2 D. 0.862
Solve the problem.The following table shows the height of a football at various times during a punt.
Use a graphing calculator to find a quadratic regression curve that expresses the height in terms of the time. Use the regression equation to find the approximate number of seconds that it will take for the ball to reach the hands of the punt returner, who is 6' tall.
A. y = -16.38x2 + 71.45x - 2.52; 4.24 seconds B. y = -15.96x2 + 70.21x - 3.51; -156.81 seconds C. y = -16.38x2 + 71.45x - 2.52; -163.5 seconds D. y = -15.96x2 + 70.21x - 3.51; 4.26 seconds
Find the probability.A bag contains 4 red marbles, 5 blue marbles, and 8 green marbles. What is the probability of choosing a blue marble when one marble is drawn?
A. 
B. 
C. 
D. 