Mei went to the store and bought strawberries and grapes. She bought five pounds of strawberries and two pounds of grapes and spent $9.85. If s represents the cost per pound of strawberries and g represents the cost per pound of grapes, write the equation to represent the total cost.

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.