16. Priyesh has 12 square paving stones. He will use all the stones to make a patio that is a rectangle.
(a) Draw a diagram to show how Priyesh can use these stones to make a patio that is a
rectangle

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )