Translate each phrase into an algebraic expression the quotation of 30 and three times a number

Really need on these. i have no idea what to do

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.

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did