How can two rational numbers be written

What is the vertex form of f(x) = x2 + 6x + 3

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.