Answer:
rs = 97
Explanation:
I am going to preface this by saying that I am assuming that there is a typo in question and sn = 8x=31
Since s is the midpoint of rn, rs must be equal to sn
rs = sn
rs = 5x +17
sn = 8x - 31
5x + 17 = 8x - 31
48 = 3x
16 = x
rs = 5x + 17
rs = 5(16) + 17
rs = 80 + 17
rs = 97
Hope this helps!