Which of the following roles does the government play in a free enterprise system? select all that apply.
1.limit government spending
2.encourage private investment
3.increase government ownership of industry
4.protect the consumer

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.