The expression, "there's no such thing as a free lunch" implies that: a. the person consuming a good must always pay for it. b. everyone has to pay for his/her own lunch. c. no one has time for a good lunch anymore. d. costs must be incurred when resources are used to produce goods and services.

What is meant by a symmetrical unimodal distribution? a. a distribution is the frequency at which a certain value of a variable is obtained during a study. a symmetric unimodal distribution is a distribution where there is one value with a larger frequency than any other and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other. b. a distribution is a pattern of frequencies for the various values of a variable collected in a study. a symmetric unimodal distribution is a distribution where there is one value with a larger frequency than any other and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other. c. a distribution is the frequency at which a certain value of a variable is obtained during a study. a symmetric unimodal distribution is a distribution where there is a uniform frequency, meaning the frequency of every value is same, and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other.

Which best describes why it is necessary to evaluate a solution?

How will you raise money to equip an army and build a navy. mention specific ideas