Use Completing the square to solve: –3x^2 + 12x – 15 = 0

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?

Lucinda leaves money in her savings account for 8 years. she started with $800 and earned 3.5% interest compound annually. how much money is in her account?