Simplify the expression: (a/b)^k

Explain why the factor 1.5 is broke. into two numbers in the model.

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?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?