Decide if the statement is true or false.cos ? is always between 0 and 1.
A. False
B. True
Answer: B
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Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(15, 20); Find cos ?.
A. 
B. 
C. 
D. 
Solve the inequality.For the function g(x) = 
, solve g(x) < 0
A. (-8, 9) B. (-?, -8) C. (-?, -8) ? (9, ?) D. (9, ?)
Solve the problem.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. By using linear regression, the following function is obtained: 
where x is the number of hours spent in the lab and y is the grade on the test. Use this function to predict the grade of a student who spends 16 hours in the lab. Round to the nearest tenth. 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. 58.8 B. 72.6 C. 62.0 D. 54.8
Write the answers.Write in words. 2,603,400,090
A. Two hundred sixty million, three hundred forty thousand, ninety B. Two hundred sixty-three million, four hundred thousand, nine hundred C. Two billion, six hundred three million, four hundred thousand, ninety D. Two billion, six hundred three million, forty thousand, ninety