Can somebody help me please? ive been stuck for like 20 minutes

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.