Question: When a certain drug is injected into a muscle, the muscle responds by contracting. The amount of contraction, s (in millimeters), is related to the

When a certain drug is injected into a muscle, the muscle responds by contracting. The amount of contraction, s (in millimeters), is related to the concentration of the drug, x (in milliliters), by s(x) = X m+nx

where m and n are constants.
(a) Find s′(x).
(b) Find the rate of contraction when the concentration of the drug is 50 ml, m = 10, and n = 3.

s(x) = X m+nx

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