You have nine balls of equal size and weight — except for one, which is a little heavier than the rest. How would you identify the heavier ball using balance scales only twice?

What is the common difference for this arithmetic sequence? -6,-2,2,6,10 a.4 b.5 c.3 d.6

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

Plssssssss on #2 and show me how to solve it