Water in a Tank The graph shows the amount of water in a 100-gallon tank after x minutes h...

Water in a Tank The graph shows the amount of water in a 100-gallon tank after x minutes have elapsed.

(a) Is water entering or leaving the tank? How much water is in the tank after 3 minutes?

---

(b) Find 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.