9. A traffic study was conducted on a busy street. In 15-minute intervals from 6:30 a. m to 8:00 a. m., the number of vehicles that passed a certain point in one minute was recorded in the table
below. Write an equation for the curve of best fit, then approximate the number of cars that passed
the point at 9:15 a. m.
90
X 0 15 30 45 60
y 32 48 71 80 98
*x = minutes past 6:30 a. m.; y = number of cars
75
86
81

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?