The equation y = -5.131x2 + 31.8212 - 3.333 approximates the number of people standing
in line to catch a commuter train x hours after 5 am
what is the best estimate for the number of people in line at 7 a. m.?
32
23
27
40

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 − 24x 8,000 + 2x 8,000 − 2x

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds