A-plus auto body is painting flames on a customer's car. they need 2 1/2 pints of red, 3 pints of orange, 3/4 pint of yellow, and 7 pints of blue paint. they use 3/4 of the blue paint to make the flames. they need 7 3/4 pints to paint the next car blue. how much more blue paint will they need to