The number of miles per gallon you get in car is dependent on many thing, one of which is how fast you drive. Gas mileage is generally poor for people that drive very slow or very fast. The following chart shows the mile per gallon at various speeds for a certain vehicle. Speed (Miles per hour) Gas Mileage (Miles per Gallon)

5 12
15 22
25 27
35 29
45 30
55 29
65 26
75 21
85 13

Write an equation for the curve of best fit.
What two speeds will give you a gas mileage of of 25 mpg (miles per gallon)?

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

The area of square garden is 300m squared. how long is the diagonal?

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.