Refer back to question #5. Becky's brother's management fees made her think about the fees on her own

investments. She started some calculations and wrote the equation: f(x-1.5)=20

a. In the context of this situation, what does Becky's equation mean?

b. Using this information, how much must the rate of return on this account be?

(question 5) Becky's brother forgot about the fees that his investment account was charging him!

He is charged 2% off the annual rate of return as an account management fee. Including the fee, about how much longer will it take him to double his money? ( i dont need the answer to question 5)