Question 4 Zoe has been selling cloth face masks (printed with her own designs) online since July 2020. Her research shows that, on a typical week in 2022, she could expect to sell 50 masks when charging $7.50 per mask; 30 masks if priced at $12.50; and 20 masks if the price were 515. She was careful ln controlllng for other factors affecng sales in her statistical analysis. a) What is the equation for the demand curve Zoe was facing (Q in terms of p) in 2022? What is the equation for the inverse demand curve lp as a function of Q]? In October 2022, Zoe was selling face masks at a price of $9.50. b] Compute the elasticity of demand ii?) at the $9.50 price point. Was demand at this point elastic or inelastic? Explain what your answer means intuitively (in one sentence). When Zoe rst conducted her analysis in July 2020, she found demand to be less elastic [more inelastic) than in 2022. Zoe was not surprised to be facing a more elastic demand in 2022 than in 2020. cl Give at least one plausible reason why Zoe's demand might have become more elastic (less inelastic) in 2022 than in 2020. d] Without additional information, is it possible to determine whether the October 2022 price of $9.50 was optimal (prot-maximizing]? If so, explain why $9.50 was optimal, or whether lowering or raising the price would have resulted in more prot. If not enough is known, state what other data you would need to make that determination, and why