The correct option is A 8,550 dollars
Shelton's earnings per day = 85.50 dollars
Earning in 100 days = 100 × 85.50
To mulitply a number by 100, we have to add two zeros to the right of the number.
⟹ 85.50 × 100 = 8550
Hence, total earnings in 100 days = 8,550 dollars