Help pleas I will give brainliest

Answer:
The change is $13.42
Step-by-step explanation:
To find the answer, you add the total amount of the cost and subtracting it from the amount you give them.
29.99+49.99+6.6 = $86.58
100-86.58= $13.42
Answer: You will get 13.42 dollars back.
Step-by-step explanation: You add them all, which gives you 86.58 than subtract by 100.