What is the sum of two solutions of the quadratic equation ax^2+bx+c=0

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.

15 point ! ~ see if you know the answer to both you!

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq