Wrapping paper is on sale at 3 rolls for 4.25. How many rolls can Danika buy with $20? (i've been searching all around the internet for the answer but i can't seem to find one similar to the answer my teacher gave me)

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Needmax 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.

If the discriminant if a quadratic equation is 4 which statement describes the roots?