An investment that you bought and sold for ___ made a profit A.400, 500

B.500,300

C.500, 400

D.400, 300​

A. 400, 500
The question mentions you make a profit, which is to make more money than what you spent or put in. All other choices would make the statement say you ended up having less money, which is money lost, not profit.

B. because the 7 represents "seven times", x represents "a number", 12 represents "plus twelve", and -4 represents "minus four"