In 2013, you buy shoes for $2 a pair and socks for $1 a pair, and your income is $30, with which you buy 12 pairs of shoes and 6 pairs of socks. in 2014, you buy shoes for $1 a pair and socks for $2 a pair, and your income is still $30.

a. draw both years’ budget lines. notice that they cross at the point (10,10).
b. true or false: in 2014, you will surely buy more than 10 pairs of shoes.
c. true or false: in 2014, you will surely buy more than 12 pairs of shoes.