Aisha spends 15 1/6 hours doing homework in September. She spends 18 3/4 hours doing homework in October. How much longer does Aisha spend doing homework in October than in September?

2 1/3 h

2 7/12h

3 1/3h

3 7/12h

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

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.

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?