The wholesale price of an item at a store is P dollars item is marked up by 20% and so every to some of the expression shown below represent the retail price in dollars of the item

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9