Solve the problem.Find the least squares line through the points 
and 
A. y = 33x + 56
B. y = -3x + 16
C. y = -3x + 56
D. y = 33x + 16
Answer: B
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Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 25.9 when x = 7;
Find y given x = 13.
A. k = 3.7; y = 50.7
B. k = 3.9; y = 48.1
C. k = 181.3; y = 
D. k = 3.7; y = 48.1
Find the volume of the specified solid. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the volume of a cylinder with diameter 16.8 cm and height 6.4 cm.
A. 611.9 cm3 B. 780.8 cm3 C. 390.4 cm3 D. 1418.0 cm3
Solve the system of equations by using elimination by addition.
A. 
B. 
C. 
D. 
Find the indicated matrix.Let A = 
, B = 
and C = 
. Find A + B - C.
A. 
B. 
C. 
D. 