Evaluate the sum.
?
?
A. 3
B. 125
C. 250
D. 7
E. none of these
Answer: B
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Evaluate the expressing using a unit circle or state that the quantity is undefined. All angles are in radians.csc (- ? )
A. 0 B. 1 C. -1 D. Undefined
Solve the equation by factoring.b(b + 11) = 0
A. {11, 0} B. {-1, -11} C. {1, -11} D. {-11, 0}
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 grade on the test. Use this function to predict the grade of a student who spends 13 hours in the 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. 64.4 B. 60.4 C. 75.6 D. 67.0
Find the perimeter of the rectangle or square.Length = 10 ft, width = 4 ft
A. 28 ft B. 14 ft C. 12 ft D. 16 ft