Answer:
He should receive $2.78
Step-by-step explanation:
Multiply 12 by 3.19 to get 38.28
then multiply 6 by 1.49 to get 8.94
Next you want to add 38.28 and 8.49 to get a total of 47.22
Last you want to subtract 50 from 47.22 to get your answer of 2.78 in which Mr. Shaw received $2.78