The Tryon Creek Wastewater Treatment Plant discharges an average of 8.3 million gallons per day into the Willamette River. Upstream of the discharge point, the Willamette River is 45 feet wide and 15 feet deep (on average), and the average velocity is 10 ft/s. Neglect density differences due to the wastewater. Determine: a. flow rate downstream of the discharge point (ft3/s)b. mass flow rate downstream of the discharge point (slugs/s)c. increase in width of the river downstream of the discharge point assuming depth and velocity do not change (ft)Hint: the cross-sectional shape of a shallow, wide river can be approximated as a rectang