Answer:
Your friend is incorrect because if you divide 21 by 7 you will get 3 if you add 7 to 3 you get 10 therefore your friend is incorrect.
The slope of the line is negative
Don't listen to the other guy. The ANSWER is A). 1209. Your welcome!
3.4% in decimal form is .034 = r
2014 - 2004 = 10 years = t
A = 45,000(1+.034)^10
A= 62,866