if ~ defines an equvalence relation on A then the set of equivalence classes of ~ form a partition of A

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

What is the relationship between all triangles that can be drawn given the same three angles

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?