To complete Part A:
A pound is a larger unit than an ounce, so multiply the number of pounds by 16 to find the number of ounces. Therefore, 2 pounds is equal to 32 ounces.
Now to determine if 32 ounces is enough coffee for a week:
Renee's mother uses 4 ounces of coffee per day. For a week (7 days), she would use:
4 ounces/day × 7 days = 28 ounces.
Since Renee bought her mother 32 ounces of coffee, and her mother only needs 28 ounces for the week, Renee indeed bought enough coffee for her mother for the week.