Final answer:
Alicia was charged $20.97 to her card for the 4 months.
Step-by-step explanation:
To calculate the amount that was charged to Alicia's card for the 4 months, we need to subtract the first free month from the total number of months she was charged. In this case, Alicia was charged every month for 4 months, but the first month was free, so the number of months she was actually charged is 4 - 1 = 3 months.
Now we can calculate the total amount charged by multiplying the monthly fee of $6.99 by the number of months she was charged. So the amount charged to Alicia's card for the 4 months is $6.99 x 3 = $20.97.