Answer:
the regular payment is 6$ an hour.
Explanation:
first, we determine how many hours were due to excess of the standars 40 hours, that was 50-40-4=6 hours. We can set then a simple equation where we will call x the regular hourly rate. Excess hours are paid 1.5x, sunday hours are paid 2x:
40x+4(2x)+6(1.5x)=342
40x+8x+9x=342
57x=342
x=342/57
x=6