Problem: The amount of an investment of "P" dollars for "t" years at simple interest rate "r" is given by A= P + Prt.
(A) Rewrite this formula by factoring out the greatest common factor on the right-hand side. Explain how you completed this.
(B) Find "A" if $8300 is invested for 3 years at a simple interest rate of 15%. Explain how you completed this.