Sarah has 450 to pay for college textbooks, she expects to pay about 75 per book. her friend told her that 4 of them can checked out at the library for free. complete the equation below to find the total number of books that sarah can get for her classes

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.

Solve the equation by completing the square. x^2+2x=17

How do i i solve this equation? -18 = x/3 + 3