A producer has determined that the revenue generated from the production and sale of x units of a product is given by R(x)=13.432x0.002x2R(x)=13.432x0.002x2 dollars, where 0x50000x5000. solve for what interval(s) of production is the revenue increasing, and for what interval(s) is it decreasing? . Use to indicate the interval is empty. use open intervals