Mr. Martinez wants to get a cell-phone plan. He has two deals:
Deal A: T-mobile with initial fee of $200 and
$30 fee each month
Deal B: Verizon with no initial fee and $40 fee each
month
Help Mr. Martinez to select a better deal.

Ineed to learn how to solve this problem

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

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.