The equation x² + 81 = (x + 10)² is equivalent to 
<h3>How to determine the equivalent equation?</h3>
The equation is given as:

Square both sides
x² + 81 = (x + 10)²
Although it can be further simplified, the above equation is equivalent to 
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Answer:
number 1 is wrong
Step-by-step explanation:
Answer:
Step 1: Identify the Problem. ...
Step 2: Analyze the Problem. ...
Step 3: Describe the Problem. ...
Step 4: Look for Root Causes. ...
Step 5: Develop Alternate Solutions. ...
Step 6: Implement the Solution. ...
Step 7: Measure the Results.
Answer: The answer is D. Hope it helps.
Step-by-step explanation:
it lost 128 gallons in 16 days so divide 128 by 16 to find the daily lost
128/16 = 8 gallons a day were lost