The maximum number of nickels that Micaela could have is 11.
To determine the maximum number of nickels that Micaela could have, let's consider the given information.
We know that Micaela has 2 pennies. So, let's subtract those 2 pennies from the maximum number of coins she can have.
Since the total number of coins cannot exceed 15, we subtract 2 from 15 to get 13 remaining coins.
Now, let's consider the value of these remaining coins. We know that the total value of the coins should be no less than $0.55.
Since each nickel is worth 5 cents, the minimum value of a nickel is $0.05.
To find the maximum number of nickels, we divide $0.55 by $0.05 (the value of a nickel).
$0.55 / $0.05 = 11 nickels.
Therefore, the maximum number of nickels that Micaela could have is 11.
In summary, if Micaela has 2 pennies, the maximum number of nickels she could have is 11.