Find the slope of the line going through the given pair of points.
and 
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Find the centroid of the region cut from the fourth quadrant by the circle x2 + y2 = 16.
A. 
= - 
, 
= 
B. 
= 
, 
= - 
C. 
= 
, 
= - 
D. 
= 
, 
= - 
Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 7 cm × 6 cm. Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.6 cm/s and the width of the image is changing at 0.3 cm/s.
A. 12.0 cm2/sec B. 11.4 cm2/sec C. 6.0 cm2/sec D. 5.7 cm2/sec
Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that y varies inversely with x. When x = 65, then y = 9.
A. k = 585; y = 
B. k = 585; y = 
C. k = 
; y = 
D. k = 
; y = 
x
When possible, apply the distributive law and combine like terms.7x + 8 + 5x - x + 5
A. 13x + 13 B. 11x + 13 C. 12x + 13 D. 12x - 13