Ed's target during his speed skating practice for 500 meters is 50 seconds. During the first trial, Ed's time was 53 seconds. His coach marked the trial +3. The coach marked the next trial -1. What time did Ed show during the second trial? A. 54 seconds
B. 51 seconds
C. 49 seconds
D. 48 seconds

Which is the completely factored from of xy^3-x^3y

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.

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?