The product of -3, a, and b is represented by the expression -3ab. If the value of a is negative, what must be said about the value of b in order for the product to remain negative?

How do you do the foil method with polynomials?

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?

Miguel has one foot of string. he cuts the string into fourths. how many inches is each piece of string?