The half-life of morphine in the human bloodstream is 3 hours. Initially there is 0.4 mg in the blood stream A) find an equation for the amount of morphine at any time K
B) how long until the amount in the bloodstream is 0.7mg

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Of f(x) is byof f(x)=-3|x| x-.f(x)? a )f(x)=3|x| b) f(x)=|x+3| c) f(x)= -3|x| d) f(x)= -|x+3|

What is the distance between (3,k+1) and (2k,k-1)