Answer:
1432 pieces are domestic mail
1 Domestic postage is $0.412
So 1432 Domestic mail cost = 1432x 0.412
= $589.984
7 pieces are international mail
1 international postage is $1.15
So 7 international mail cost = 7X 1.15
= $8.05
So the total cost is $589.984 + 8.05
= $598.034
Step-by-step explanation: