9) The cost of apples is directly proportional to the number of appies purchased. Jason pald $2.52 for 6 apples. It Prepresents the cost, in dolles, and " represents the number of apples purchased, which equation best represents this reialonship? (A) P 0.42n (C) P 6 (D) P=15.2 (B) P 2.52n

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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.