-8
On the number line if you are at positive 8 and add -8 you will lose 8 and get zero! Hope this helps!
Answer:
A drink is 5 so two are 10...
And original cost-if saves 4 is 18
so 18-10=8
Popcorn is 8 dollars i think
Answer: A 2.7 x 10^9
Explanation: brain go brrrrr