When natural or legal forces work to protect a firm from potential competitors, the market is said to have ________

Which of the following is classified as an intermediate good?

i. the purchase of a Big Mac by a college student ii. McDonald's purchase of pickles iii. a McDonald's restaurant owner's interest payment for the loan on her building A) ii only B) ii and iii C) i and iii D) i only E) i, ii and iii

If consumption increases by $400 when income increases by $500, then the marginal propensity to consume is

A) 900. B) 100. C) 1.20. D) 0.80.