4. a. Write a function rule to calculate the cost of buying bananas at
$.39 a pound.
b. How much would it cost to buy 3.5 pounds of bananas?

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.

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.