Hot-Air Balloon Project
By Kennedy, Katie, and Alaina
It takes the balloon 40 minutes to land, because when the y is 0, the x is 40.
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It takes the balloon 39 minutes to reach an altitude of 20 feet. You can tell because when the y is at 20 feet, the x is 39.
30x. 1st and 4th are together at 16 minutes, 480 feet up in the air. Where the two lines intersect is where the two balloons meet. The fourth balloon's line goes up because its height does, while the other's goes down just as the balloon does. They meet at 16 minutes, and 480 feet, just like the labeled point says.