Answer:
Step-by-step explanation:

Product of a number and its multiplicative inverse should be equal to 1.
So,

That is the Community Property of Multiplication.
Hope that helps :)
Well since the first expression says 8x(40+7) the answer would be 40 that is missing
Since your splitting 47 into 40 and 7 and multiplying both of them by 8 the answer would be 40
Answer:
b
Step-by-step explanation:
To solve this you have to do 3912/2 which is 1956. Since Thursday is 40 dollars less you have to subtract 40 for Thursday and add 40 for Sunday. So, Thursday brought in 1916 and Sunday brought in 1996. To check your work add 1996 and 1916 and make sure they equal 3912, which they do.