Calculate the direction of 
and the midpoint of line segment P1P2.P1(-3, -8, 4) and P2(-2, -7, 3)
A. 
i + 
j - 
k; 
B. 
i + 
j - 
k; 
C. 
i + 
j - 
k; 
D. 
i + 
j + 
k; 
Answer: B
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The following table shows the average rice yield Y, in tons per hectare, on Asian farms t years after 1980. Based on the regression equation, how much increase in yield is expected over a 5-year period? t 5 10 20 25Y 3.38 3.61 3.96 4.14? ?
A. 0.20 tons per hectare B. 0.04 tons per hectare C. 0.36 tons per hectare D. 3.21 tons per hectare
Answer the question.Tell which of the following distributions would have the most variation.
A. Salaries of high-school teachers B. Salaries of CEOs of U.S. corporations C. Salaries of waitresses D. Salaries of bank clerks
Insert the correct sign of inequality (> or <) between the given numbers.-8 -1
A. -8 < -1 B. -8 > -1
Plot the given point in the rectangular coordinate system.P(4, 1)
A. 
B. 
C. 
D. 