Multiply (-3x4y3z)(-4x2y3z).

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.