Angle ABC is taken by a dilation with center P and scale factor 3 to angle A’B’C’. The measure of angle ABC is 21 degrees. What is the measure of angle A’B’C’? Explain how you know

Mrs. chibas is making chocolate chip cookies for her daughter's class. she bought a tub of chocolate chip cookie dough that contained 57.6 ounces of dough. if each cookie needs 1.2 ounces of dough, how many cookies can she make