1. The problem statement, all variables and given/known data The revenue function for a product is r = 8x where r is in dollars and x is the number of units sold. the demand function is q = -1/4p + 10000 where q units can be sold when selling price is p. what is dr/dp? 2. Relevant equations r=pq 3. The attempt at a solution I substituted the values into r=pq. 8x= -1/4p^2 + 10000p i'm not sure which rule to use from here to find the derivative or if i overcomplicated the question.