Kelly is willing to pay $5.20 for a gallon of gasoline. The price of gasoline at her local gas station is $3.80 . If she purchases ten gallons of gasoline, then Kelly's consumer surplus is

If in the third quarter of 2016 total investment spending was $4,768 billion and depreciation was $3,292 billion, then the amount counted in GDP, which is known as gross investment, would be

A) $1,476 billion. B) $3,292 billion. C) $4,768 billion. D) $8,060 billion.

Elasticity along a downward sloping linear demand curve

A) is constant and equal to the slope of the curve. B) is constant and equal to the slope times the ratio of price to quantity. C) changes along the curve. D) does not vary with price unless the good is expensive.