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. Use the equation of the least squares line to predict the grade of a student who spends 7 hours in the lab. Number of hours spent in lab (x) Grade (percent) (y) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. 71.6%
B. 75.6%
C. 81.6%
D. 77.0%
Answer: B
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Answer the question.Suppose that an > 0 and bn > 0 for all n ? N (N an integer). If 
= ?, what can you conclude about the convergence of 
?
A. 
diverges if 
diverges, and 
converges if 
converges
B. 
diverges if 
diverges
C. 
converges if 
converges
D. The convergence of an cannot be determined.
Provide an appropriate response.-6x + 8y = A 3x - 10y = BFor what values of A or B can this system of equations have (0,0) as a solution?
Fill in the blank(s) with the appropriate word(s).
Solve.x2 + 125 = 0
A. ± 10i
B. ± i
C. ± 5
D. ± 5i
Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 8, ? = 270°
A. v = -8j B. v = -8i + 8j) C. v = -8i D. v = -8i - 8j