Question 324890
Find the z score.
{{{z=(x-mu)/sigma=(750-845)/270}}}
{{{z=-0.352}}}
{{{P(z)=0.3625}}}
This probability is the cumulative area up to $750. 
Since the total probability equals 1 (100%) subtract from 1 to get the correct probability (>$750).
{{{P(x>750)=1-0.3625=0.6375}}} or 63.75%