Ashley has decided to participate in sit-up challenge. The first day she will complete sit-ups. Every day she will do twice as many sit-ups as the day before. The function can be used to to determine how many sit-ups she will do on day x of the challenge.

7x+8y=-18, 4x-9y=-3 solve the system of equations

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

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.