The maximum number of batches in the table is 9
So, 6 more batches than the maximum number of batches is 9+6=15
Also, we must see that there is a trend in the total number of cookies
As the batch increases by one, we can see that the total number of cookies increases by 16
Hence, the total number of cookies when she bakes 15 batches is
229+ 15x6 = 319
