$810 because if you use the simple interest formula (s=p*r*t), you get $810 hope this helped!
A recursive pattern is a sequence of numbers that entails a pattern between succeeding numbers. in this case, we can see that sequence 2 has an arithmetic difference of 9, that is the proceeding terms are 40, 49, 58.. The third one has also an arithmetic difference that is increasing by 3 each. The answer then is A which has no pattern.
It is 9 because all the other numbers are in the 80s and 90s 9 is way to low.
3(10) + 5y = 20
5y = 20 - 30
5y = - 10
y = - 2
