The demand for air travel between two cities doubles. the elasticity of the supply of air travel between these cities will a. not change over time b. become more elastic, the longer the time since demand doubled c. become less elastic, the longer the time since demand doubled d. adjusts to become equal to the price elasticity of demand over time

The demand for air travel between two cities doubles. The elasticity of the supply of air travel between these cities will become more​ elastic, the longer the time since demand doubled. Elasticity is the responsiveness between supply or demand when nothing changes but the price. In this situation, the demand for air travel between two citifies doubled, so, the traveling is elastic because even though the demand rose, so did the price, but the demand didn't start to drop. 

Hi! so let’s say you buy two cds that’s a total of 20$ & two books , which is 12$, giving you the sum of 32$ , i would write it as ; c2+b2=32hope this : ) good luck!