Inverse property of multiplication.
Answer:

Step-by-step explanation:

Answer:
146
Step-by-step explanation:
Since John works for 9 hours and makes 14 an hour. You multiply 14 by 9 which equals 126. You add 20 from the tips to 126. This makes 146.
Answer: 15
Step-by-step explanation:
20/8=2.5
6*2.5=15