4. Ziam is considering an offer to perform his own songs on a CD to be titled “Waiting…There. In the past, he has written but not performed his music. If Ziam s royalty is 0.12 of the suggested retail price of $15.00, but 0.25 of the retail price is deducted for packaging before Ziam s royalty is calculated, how much will he receive for sale of the CD? Write your answer in the form of an equation and solve it.