Katie earns money by selling lemonade. she keeps track of how much she spends and makes each weekend. the following are her profits and expenses: -$3, +$4, -$3, +$6, -$2, +$5, -$6, +$12. how much money did katie make or lose?

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

Someone answer asap for ! 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.

Suppose a gym membership has an initial enrollment fee of $75 and then a fee of $29 a month. which equation models the cost, c, of the gym membership for m months?