First, find the equation of the line.
the slope is given, so y=-5x+b
now use the given point to find b: 228=-5*(-3)+b, b=228-15=213
so the equation of the line is y=-5x+213
when y=517: 517=-5x+213
304=-5x
x=-60.8
Number one is B hope this helps out :)
You forgot to add a story to the question... I would gladly help you tho ;)