The hu family goes out for lunch, and the price of the meal is $45. the sales tax on the meal is 7%, and the family also leaves a 20% tip on the pre-tax amount. what is the total cost of the meal?

The answer is b.$19.99  hope this : )

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.