Water in a Tank The graph shows the amount of water in a 100-gallon tank after x minutes have elapsed. 100 90 80 70 60 50 40 30 20 10 012345678 9 10 Time (minutes) (a) Is water entering or leaving the tank? How much water is in the tank after 3 minutes? (b) Find both the x- and y-intercepts. Interpret each intercept. (c) Find the slope-intercept form of the equation of the line. Interpret the slope. (d) Use the graph to estimate the x-coordinate of the point (x, 50) that lies on the line. Water(gallons)

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