It is D because all the numbers range from 12 to 23, with no number being extremely low or high compared this range.
Answer:
Find annual profit: $75,000/6 = $12,500
ROI = Annual Profit/ initial investment
ROI = $12,500/$15,000 or 83.3%
hope that help
C. 2(x+10) is the correct answer
E+14 is 100000000000000, so 1.783864 times that is 178386400000000