What is the difference between revenue and cost?

Angel Rodriguez pulls up in his 24-foot panel truck in front of Sezz Medi Brick Oven Pizza in Upper Manhattan. Even though it's the middle of the summer, he's delivering— firewood

He says even though fuel costs have doubled in the past year, it's still worth the premium he gets delivering ash and cherry to the captive and growing market in NYC. How would an increase in Angel's salary affect short run costs? A) Short run variable costs would increase. B) Short run fixed costs would decrease. C) Short run total costs would decrease. D) Short run average fixed costs would increase.

Supply-side economic policies seek to

A) raise interest rates through contractionary monetary policy. B) increase federal government expenditures. C) increase consumption expenditures by increasing taxes. D) increase saving and investment using tax incentives.