The demand equation for a certain product is given by p= 112 -0.085, where p is the unit price (in dollars) of the product and az is the number of units produced. The total revenue obtained by producing and selling z units is given by R = zp. Determine prices p that would yield a revenue of 7020 dollars. Note: Round the prices to two decimal places. Do not round until the final answers. Lowest such price = Highest such price =