7 because 42 divided by 6= 7 and length times width = perimeter
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You would do parentheses first and that answer you will x 7
Answer:
B
Step-by-step explanation:
The domain is all possible values of x. Here, x is the number of $5 nontaxable items. So x must be an integer, and it can't be negative. It is possible for x to be 0. So x is all whole numbers.