a company has determined that the daily marginal revenue function associated with producing and selling their watch is given by
R'(x) = -0.009x + 12
where x denotes the number of units produced and sold and R'(x) is measured in dollars/unit.
a. determine the revenue function R(x) associated with the producing and selling these watches (is it just the integral???)
b. what is the demand equation that relates the whole sale unit price with the quantity of watches

Question

a company has determined that the daily marginal revenue function associated with producing and selling their watch is given by 
R'(x) = -0.009x + 12
where x denotes the number of units produced and sold and R'(x) is measured in dollars/unit.
a. determine the revenue function R(x) associated with the producing and selling these watches (is it just the integral???)
b. what is the demand equation that relates the whole sale unit price with the quantity of watches