The answer is 14x.
You always have to do whats in the parenthesis first. In this case you would do 7 + x = 7x. Then, you add this 7x to the other 7 x. 7x+7x=14x.
Answer: D
Step-by-step explanation:
Well, the commission should total $1,800. This is one tenth of what he sells, so he must sell $18,000 value of merchandise.
The answer is the second option-always