Answer:
fdg
Step-by-step explanation:
420 x .1 = 42
420 + 42 = 462
400 x .2 = 80
400 + 80 = 480
The first one is cheaper
|-8|=8
|10|=10
any negative number between the two slashes '||' equals to always a positive number
and a positive number between the two slashes '||' remains the same
