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 14 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. 65.4%
B. 62.6%
C. 58.6%
D. 74.6%
Answer: B
Mathematics
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Provide an appropriate response.A concrete foundation includes 
inches fill. If the foundation is to be 32 inches thick, how thick must the concrete layer be?
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Mathematics
Approximate the expression to the nearest thousandth.
A. -0.2 B. -0.163 C. -0.315 D. -0.178
Mathematics
Evaluate the expression.cot2 90° - sec 180°
A. 1 B. -1 C. 2 D. 0
Mathematics
Solve.
+ 
= 
A. 4, 3 B. -6, 5 C. -3, -4 D. No solution
Mathematics