Bob's barber shop cut 3,000 heads of hair in 2014 and 3,100 in 2015. the price of a hair cut was $7 in 2014 and $8 in 2015. if 2014is the base year, what was bob's contribution to real gdp in 2014?

if you break down the data from the global footprint network, china exerts far more pressure on its ecosystems per capita than america in terms of crops, grazing, foresting, and fishing. but where america blows everybody out of the water is carbon emissions per capita