The amount of money in a savings account increased from $5,600 to $6,720. what was the percent of increase in the amount of money saved?

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.

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

Complete the equation of the live through (-1,6) (7,-2)