Total number of bulbs tested, N = 445
Number of bulbs that lasted more than 500 hrs, x = 316
Point estimate of bulbs that lasted more than 500 hrs = x/N = 316/445 ≈ 0.71 = 0.71*100 = 71%
The answer is G=34 !!!!!!
I assume you want the expression to this so it would be x-y-3
The point where they intersect