For each of the following products, explain whether demand is likely to be elastic or inelastic?

(a.) Cigarettes
(b.) Tacos
(c.) Gasoline
(d.) Milk
(e.) Honda Accord automobiles
(f.) Newspapers

A, c, d relatively inelastic. There are no substitutes available for those 3, so those that need them will buy them regardless of price. B, e, f have many substitutes, so those that want them can buy something similar if the price gets too high. Some might argue that cigarettes are elastic as people don't HAVE to smoke, but those that are addicted to smoking will buy them regardless of price. So I say inelastic.