The smith family purchased a new washer and dryer for $1400. they
determined that the monthly cost to operate both would be $20. to
determine the average monthly cost for owning and operating the washer and
dryer over x months mrs. smith uses the function, c(x) = -
1400+20x
*. how
the average monthly cost is less than $40?

Cor d? ? me ? 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.