A local hamburger shop sold a combined total of 620 hamburgers and cheeseburgers on Monday. There were 70 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Monday?

What numbers are included in the set of integers? what numbers are not included?

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.