Gordon is 60 years old and Mary is 55 years old. They are married with three dependent children over age 17, and Gordon has one job that pays wages of about $73,000. Gordon and Mary expect to take the standard deduction in 2020. Assuming that Mary is unemployed, what will Gordon most likely report on his 2020 Form W-4

Anewspaper story on the effect of higher milk prices on the market for ice cream contained the following: "as a result [of the increase in milk prices], retail prices for ice cream are up 4 percent from last year. . and ice cream consumption is down 3 percent." source: john curran, "ice cream, they scream: milk fat costs drive up ice cream prices," associated press, july 23, 2001. based on the information given, what is the price elasticity of demand for ice cream?