Burt inherits $91,000. He decides to invest part of the inheritance in a mutual fund and the remaining part in a certificate of deposit. It the amount invested in the certificate of deposit is $3000 more than 7 times the amount invested in the mutual fund, find the amount invested in each account. Define the unknown quantities in terms of one variable. Translate the question into an equation. Solve the equation, showing all work. Write a complete answer to the question asked.