400
Mr. McNamee is recording changes in the volume of water in Marsha's tank. After 2 minutes, she has 76 cubic inches. After 5 minutes, she has 40 cubic inches. Write an equation in slope-intercept form that models her total volume (y) over time (x) AND identify the meaning of the x intercept, y intercept, and slope.
y = -12x + 100
slope = -12, losing 12 cubic inches per minute
y - intercept = 100, she started with 100 cubic inches of water
x - intercept = 8 and 1/3, after this many minutes her tank will be empty