7. Show work please

Question 7 4 pts A valve on a storage tank is opened for 4 hours to release a chemical in a manufacturing process. The flow rate R (in liters per hour) at time t ( in hours) is given by the exponential model R = 3,168.27e-0-6155r 10-0to Use the definite integral to approximate the number of liters of chemical released during the first 4 hours. Round your answer to two decimal places