Answer: =125.6
Step-by-step explanation:
Add 26.5 to both sides of the equation
Simplify
A= 3400t + 600 | given formula
21000= 3400t + 600 | substitute the altitude into the formula
20400 = 3400 | subtract 600 from both sides
6 = t | divide both sides by 3400
6 minutes
The x which achieve these statement is x=0.
Put it back into the equation,
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