Question 19 Now assume that the demand elasticity is constant. Solve for this, using the log method. Round to two decimals. Question 20 1pts With this elasticity, what would the optimal price be? Round to two decimals. Sinceret is a new brand of unsweetened tea. In the past two periods sales volumes were given by 596 and 422 (thousands of bottles) when prices were $2.3 and $2.5, respectively. it is belleved that the demand curve was the same in both periods. The marginal cost of Sinceret is $1.8 per bottle. Assume that dernand is linear, with pra-bQ Solve for b (round to five decimals) Question 18 1 pts Solve for a fround to two decimals