# Write and solve a compound inequality that represents the possible temperatures

Write and solve a compound inequality that represents the possible temperatures (in degrees Fahrenheit) of the interior of the iceberg.
Given: The temperatures are given -20 and -15 in degree centigrade.
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Formula used:
$C=\frac{5}{9}\left(F-32\right)$
Calculation:
For $C=-{20}^{\circ }$
$F=\frac{9}{5}\left(-20\right)+32$
$F=-36+32$
$F=-{4}^{\circ }$
For $C=-{15}^{\circ }$
$F=\frac{9}{5}\left(-15\right)+32$
$F=-27+32$
$F={5}^{\circ }$
The value of temperature at $C=-{20}^{\circ }$ is $F=-{4}^{\circ }$ and at $C=-{15}^{\circ }$ is
Hence, the compound inequality of the temperature is found $-{4}^{\circ }\le F\le {5}^{\circ }$