Aloan of 

$39,000

  is made at 

8.5%

  interest, compounded annually. after how many years will the amount due reach 

$62,000

  or more? (use the calculator provided if necessary.)

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?