Final answer:
After deducting the one-time enrollment fee of $10 from the total payment of $160, the remainder is $150. This amount divided by the monthly fee of $25 gives us 6 months, meaning Natalie had her gym membership for 6 months.
Step-by-step explanation:
To find out how many months Natalie had her gym membership, we need to subtract the one-time enrollment fee from the total amount she paid and then divide the remainder by the monthly fee.
Natalie's total payment: $160
Enrollment fee: $10
Monthly fee: $25
First, let's remove the enrollment fee from the total payment:
Total payment - Enrollment fee = Membership fees
$160 - $10 = $150
Now, let's divide the membership fees by the monthly fee to find the number of months:
Membership fees / Monthly fee = Number of months
$150 / $25 = 6 months
Therefore, Natalie had her gym membership for 6 months, which corresponds to option B).