Dirk has run many marathons and keeps track of all of his finishing times. At a marathon last month, he finished in 300 minutes. The other day, he ran another marathon and finished with a time of 306 minutes. What is the percent of increase in Dirk's marathon time?

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?