Answer:
<h2>x = 727</h2>
Step-by-step explanation:

When you move down you subtract and when you move to the right you subtract when your moving up or to the left you add
Answer:
The answer is B hope this helps
<h2>
Answer:</h2>
720 pounds
<h2>
Step-by-step explanation:</h2>
Initially, we have that the amount of algae in the pond is
. Every four hours the amount of algae doubles. If we called
the time and
the amount of algae, we have that:

Finally, <em>after 12 hours the amount of algae in the pond is 720 pounds</em>