none of thouse answers are corect but if i was u i would pick d
b. 370 If you take 64 + 81 and then divide by 2 to find the average amount, you get 72.5. So, he earns somewhere around $72.5 each day he works. Then multiply that by 5 days and you get $362.5. If you are just finding a reasonable estimation, answer b.$370 would be the closest to that amount.