John is considering purchasing some preferred stock from BBCC Corp. The company pays a $30 annual dividend on its preferred stock, and John believes he should earn 7 percent on the stock based on the company’s risk profile. What is the value of the stock per share?

Gamma rays  and beta particles are all  used  to treat internal organs. x-rays  are produced by firing electrons at a metal target and  gamma rays  are emitted by the nucleus of radioactive atoms.  gamma rays  are  used  to kill cancer cells, and to  medical  equipment and in radioactive tracers.