Does somebody know how to do this??

Suppose you calculate that elasticity of demand for cigarettes is 0.5. you can conclude that: a. demand for cigarettes is elastic b. demand for cigarettes is unitary elastic c. a 1% increase in price of cigarettes will result in a 0.5% decrease in quantity demanded d. a 1% increase in the price of cigarettes will result in a 0.5% increase in quantity demanded.

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

How will your health most likely be affected if you follow the recommended guidelines for sleep, rest, and physical activty