Question 7 4 pts Coal gas is produced at a gasworks factory. Pollutants in the gas are removed by scrubbers, which become less and less efficient as time goes on. The following measurements, made at the start of each month, show that the rate at which pollutants are escaping (tons/month) in the gas. Make an OVERESTIMATE of the pollutants that escaped during the first 6 months. Time O 1 (months) 2 3 4 5 6 Rate of 5 7 escape 8 10 13 16 20