Volunteers at a food bank are making packages. Each package weighs 80 pounds. For each situation, write and solve an equation, using x as the variable to represent the weight of one bag of rice. Each package contains 5 boxes. Each box contains a 9-pound bag of beans and a bag of rice. The bags of rice are all identical. I NEED THE ANSWER NOW

How many solutions does the nonlinear system of equations graphed below have?

What does independent variable and dependent variable mean in math?

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.