Answer:
-6°F ≤ T ≤ 2°F
Explanation:
basically
add 4 to -2 to get 2
add -4 to -2 to get -6
Let "T" be the actual temperature inside the deep freezer.
According to the problem, the temperature is set to -2°F, so we have:
Set temperature = -2°F
The manufacturer guarantees that the actual temperature will fall within 4°F of the set temperature. This means that the actual temperature could be as low as 4 degrees below the set temperature (-2°F - 4°F = -6°F) or as high as 4 degrees above the set temperature (-2°F + 4°F = 2°F).
Therefore, the inequality that can be used to describe this situation is:
-6°F ≤ T ≤ 2°F
This inequality indicates that the actual temperature "T" must be greater than or equal to -6°F and less than or equal to 2°F in order to satisfy the manufacturer's guarantee.
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