What is any factor that makes it difficult for a new firm to enter a market referred to as?

Lesley buys 6 cappuccinos per week when her income is $900 per week and buys 8 cappuccinos per week when her income is $1100 per week. For Lesley, cappuccinos are a(n) ________ good

A) normal B) luxury C) inferior D) essential E) substitute

Increases in government purchases, investment spending, and autonomous consumption all tend to

a. increase real GDP and raise the interest rate b. increase real GDP and lower the interest rate c. increase real GDP but leave the interest rate unchanged d. decrease real GDP and lower the interest rate e. decrease real GDP and raise the interest rate