Me? ! homework i don't even get. i need asap with question 1 & 2

               Chicken        Beef            Total
Rice            20               10               30

Pasta          40               30               70

Total            60               40              100

Place given information into the chart...Total customers who like rice is 30 and 20 of the like chicken.  This means the other 10 (30-20 = 10) must like beef.  60 customers liked chicken means column for chicken has a total of 60.  Subtract and find how many like pasta 40  (60 -20 =40)...
Is this enough help or do you need clarification on the second problem?

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.