A store can sell 400 candy bars per week when the price is $0.50 per candy bar and they can sell 350 candy bars per week when the price is $0.75 per candy bar.  Let q represent the number of candy bars sold per week and let p represent the price of a candy bar in dollars. Find the linear demand function in the form q = mp + b.    A. q = 0.005p – 1.5 B. q = 200p + 300 C. q = – 0.005p + 2.5 D. q = – 200p + 500 E. q = 0.25p + 50

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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.