Solve the problem.
The graph shows the amount of gas in a 200-gallon tank after x minutes have elapsed. (i) Find the slope-intercept form of the equation of the line. (ii) Use the graph to estimate the x-coordinate of the point 
that lies on the line..
A. y = 20x + 8; (8, 168)
B. y = 20x; (8, 160)
C. y = 20x - 8; (0, 160)
D. y = -20x; (8, -160)
Answer: B
Mathematics
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A. 3; 3, 2, 1 B. 3; 3, -2, 1 C. 3; 3, 2, -1 D. 3; 3, -2, -1
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Find the length s. Round the answer to three decimal places.
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Determine which ordered pair is a solution of the system.
A) (8, 1)
B) (–9, 3)
C) (–9,8)
D) (8, –1)
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Mathematics