91, I just kept adding 5 until I got to the 20th term
The answer should be 3 :)
Jim is ranked third best in his class of 50 students.
(x-3)^2 + (x+5)^2=9^2
(x^2-6x+9) + (x^2+10x+25)=81
2x^2+4x+34=81
2x^2+4x-47=0
From here just use quadratic formula
the answer would be y = 2x + 1