The daily discharge of a particular river in april and june is modeled by the following functions where the discharge is measured in millions of cubic feet per day and tequals=1 corresponds to the first day of the month. complete parts (a) through (c) below. r 1r1equals=0.250.25tsquared2plus+36. 3236.32tplus+721.78721.78 (april) r 2r2equals=0.900.90tsquared2minus−69 .0469.04tplus+2049.952049.95 (june) 0 5 10 15 20 25 30 0 500 1000 1500 2000 2500 t r r 1r1r 2r2 a coordinate system has a horizontal t-axis labeled from 0 to 30 in increments of 5 and a vertical r-axis labeled from 0 to 2500 in increments of 500. a curve labeled r 1 rises at an increasing rate from left to right and passes through the points (0, 700) and (30, 2050). a curve labeled r 2 falls at a decreasing rate and passes through the points (0, 2050) and (30, 800). all coordinates are approximate. a. determine the total amount of water that flows through the river in april (30 days). set up the integral that will be used to find the total amount of water that flows through the river in april. use increasing limits of integration.