From 2006 to 2008, ______ fell by $350 billion.

Tom is willing to contribute $400 toward building a public park, Jack is willing to contribute $500, and Joe is willing to contribute $750

What is the total marginal value for the park if Tom, Jack, and Joe are the only residents in the neighborhood where the park is being built? A) $1,650 B) $1,050 C) $3,300 D) $2,350

Marginal utility is _____

a. always greater than total utility b. utility that is not as good as normal utility c. the extra utility derived from consuming one additional unit of a good or service d. always positive e. not related to total utility