Jane was late getting ready for the party, and the liters of soda she bought were still at room temp. (73F) with guest arriving in 15 minutes. If she puts the drinks in her freezer at -10F will the drinks be cold enough (35F) for her guest. Assume k=-.031

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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.