+8 means that it is a positive number
-8 means that it is a negative number
I think what you mean by: {8}, is |8| which is absolute value which means no matter the answer it is the absolute value from 0 so it’s always +
Answer for the first question:

Answer for the second question:

There are 4 US quarts in a gallon.
Hope I helped!!!! :)
Answer:
$0.32, so a quarter a nickel and 2 pennies
Step-by-step explanation: