Answer:
A is $490 and B is 3990
Step-by-step explanation:
The way I solved this is with my last brain cells, you welcome.
a. 100 m
b. 900 m
c. 5,100 m
d. 8,800 m
e. -650 m
63g extra
420 x 0.15 =63 g
maybe its $210