A hot air balloon descends from an altitude of 2,000 feet at a constant rate of 90 feet per minute. The graph shows the altitude of the balloon over time. Write a linear function in the form y = mx +| to represent the situation. 2000 1800 1600 1400 1200 1000 800 600 400 200 0 4 8 12 16 20 Time (min) how your complete work. Altitude (ft)

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.