For the given pair of points, find the equation of the line 
that goes through the points by solving a system of equations.(3, -1) and (-4, 20)
A. y = 3x - 10
B. y = -3x + 8
C. y = -3x - 1
D. y = 3x + 8
Answer: B
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A. 
B. 
C. 
D. 
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To the nearest unit, find the work needed to move a trunk when: 
A. 580 ft-lb B. 527 ft-lb C. 2900 ft-lb D. 479 ft-lb
Solve the given applied problems involving variation.At a fixed temperature, the resistance R of a wire varies directly as the length l and inversely as the square of its diameter d. If the resistance is 1.4 ohm when the diameter is 1 mm and the length is 280 cm, what is the resistance when the diameter is 4 mm and the length is 1870 cm?
A. 0.584 ohm B. 116.875 ohm C. 163.625 ohm D. 2.338 ohm
Evaluate the expression.[[9.8]]
A. 8 B. -9 C. 9 D. 10