Final answer:
Each friend will receive 5 cookies.
Step-by-step explanation:
In order to find out how many cookies each friend will receive, we need to subtract the number of cookies Jennifer ate (3) from the total number of cookies she made (28). So we have 28 - 3 = 25 cookies remaining. Now we can divide the remaining cookies evenly among her 5 friends: 25 / 5 = 5 cookies each. Therefore, each friend will receive 5 cookies.