At price of $150 a cell phone company manufacturers 2 phones. at price of $250, the company produces 4 phones. what is the price elasticity of supply?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Economic growth in the united states does not affect the economies of other countries. select the best answer from the choices provided t f

Why do scholars believe that atlantis was a ficitonal place created by plato