immy's income is $1200 per month. At a price of $7 per sandwich, Jimmy buys 6 sandwiches. Jimmy's income increases to $1,315 per month and Jimmy's consumption of sandwiches changes to 18. What is Jimmy's income elasticity of demand for sandwiches? (use the midpoint formula for your calculation) Note: enter answer with only numerical values and round up to the nearest tenth. For example, if you think the answer is "$101.583" then enter the answer "101.6" in the space below