Answer:
7 packages.
Step-by-step explanation:
Let x represent number of cookie packages.
We have been given that Maya has $15 to spend. She spent $5.50, including tax, to buy a notebook.
Amount left after buying notebook would be
.
As Maya needs to save $7.75, so money left to buy cookies would be
.
We are also told that cost of each cookie package is $0.25. The cost of x packages would be
.
The cost of x packages should be less than or equal to 7.75. We can represent this information in an inequality as:


Therefore, Maya can buy at-most 7 packages.