Problem
Gadgets are produced and sold in a competitive market. When there is no tax, the equilibrium price is $20 per gadget. The own-price elasticity of demand for gadgets is 0.5. If an excise tax of $4 leads to an increase in the price of gadgets to $24, what must be true about the own-price elasticity of supply for gadgets?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.