How would a merchant use information about supply and demand?

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.

What is the best definition of economic data?

Attempted crimes are as equally against the law. do you think punishing someone for what they tried to do is as important as punishing someone for what they did do? explain your reasoning and use evidence to back it up.