An environmental firm is removing pollution from a river bed. They find that the pollution is decreasing at a rate of 8% per month, as measured in parts per million. The pollution starts off at a level of 350 parts per million (ppm). What is the pollution level 5 months after they begin clean-up? Make sure you show work in the space provided. Round to the nearest hundredth and label with appropriate units.

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b. the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c. in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.