Dave has a home in Pittsburgh, PA (HDD = 6,000) with a roof area of 1017 ft2. He is considering upgrading the insulation from R-16 to R-28. The estimate for this job from the contractor is $616. Dave’s home is heated with natural gas. Last year, the average price he paid for natural gas was $15.6/MCF. Assuming an AFUE of 88.1%, how long will it take Dave to recover his investment (in years)

a) Increase in export  

b) decrease in Tariff revenue

Explanation:

a) The Quantity of U.S exports to Mexico will increase due to the decrease in market price of goods imported from US to Mexico which is occasioned by the removal of Mexican tariffs on imports from the United states .  

b) The US  tariff revenue from trade with Mexico will decrease drastically  

Import Tariffs are one of the ways Government generates revenue for the economy hence when these tariffs are removed the revenue generated will be non-existent .