the axis of symmetry would be x=1
I think it would be 40% but i am not fursher i took 150 244 300 and 50 added them and subtracted them from 1240 and that gave me 496 496 % of 1240 is 40%
If I'm correct the answer would be C.) hope this help
The m in y=mx+b stands for the Slope of the equation