I need help solving this.

The daily discharge of a particular river in April and June is modeled by the following functions where the discharge is measured Ar O in millions of cubic feet per day and t= 1 corresponds to the first day of the month. Complete parts (a) through (c) below. 2500- 2000- ry = 0.25t2 + 36.26t + 721.59 (April) 1500 12 = 0.9312 - 69.06t + 2053.07 (June) 1000 500- 10 15 20 25 30 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. The total amount of water that flows in April is about (Round to two decimal places as needed.) b. Determine the total amount of water that flows through the river in June (30 days). Set up the integral that will be used to find the total amount of water that flows through the river in June. Use increasing limits of integration. ()d The total amount of water that flows in June is about (Round to two decimal places as needed.) c. The river flows out of a lake, which contains approximately 0.67 mis of water. Determine the percentage of the lake's volume that flows through the river in April and June. The percentage of the lake's volume that flows through the river in April and June is] (Round to two decimal places as needed.)