Answer:
he is paid at time and a half for overtime either
9.50/(9.5/2)= $14.25
he worked 49 hours:
for 40h he is paid 40*9.5=$380
for 9 additional hours it is paid 9*14.25=$128.25
total salary for a week during which he works 49 hours:
380+128.25=$508.25