A deli owner has determined that his revenue, y, from selling sandwiches each day is at most -0.05r2 + 67, where x represents the number of sandwiches he sells. To make a profit, his revenue must be greater than his costs, represented by the expression 1.51 + 45.
Write a system of inequalities to represent the values of x and y where the deli owner makes a profit. Then complete the statements.
The point (30,90) is
The point (60,160) is
of this system.
of this system.

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

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.

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?