Find the equation of the least squares line.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. 
A. y = 33.7 + 2.14x
B. y = 33.7 - 2.14x
C. y = -67.3 + 1.07x
D. y = 67.3 + 1.07x
Answer: D
Mathematics
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Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.x4 - 16
A. prime B. (x2 + 4)(x + 2)(x - 2) C. (x2 + 4)2 D. (x2 - 4)2
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Solve the inequality. Express your answer using interval notation. Graph the solution set.- 
? 
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A. 
B. 
C. 
D. 
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Solve the problem.The population P, in thousands, of Prairie Grove is given by P = 
, where t is the time, in months. Determine the interval on which the population was greater than or equal to 40 thousand.
A. [5.474, ?) B. [0.658, 6.842] C. [0.526, 5.474] D. (-?, ?)
Mathematics