Which is an example of the associative property? Question 1 options:

A. x + 5 = 5 + x

B.(x + 3) + 7 = x + (3 + 7)

C.3 • (x + 5) = 3 • x + 15

D. If x = a, and a = 7, then x = 7.

The function models the number of accidents

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120