Whats is the sum of 9×9

answer: {9,9,9,9,9,9,9,9,9}

Step-by-step explanation:

The answer is

9*9=81

Center A = $300 for a year (unlimited)

Center B = $35 + $15 a week + $5 per class.

12 months in a year, $15 * 12 = $180.

52 weeks in a year, $5 * 52 = $260.

Center B = $35 + $180 + $260 = $475.

$300 < $475, therefore A is less expensive to use for a year.