Part A CHEMISTRY Under standard almospheric conditions, water will not remain a liquid if its temperature is less than or equal to 0^circ C or if it is greater than or equal to 100^circ C Suppose you have a cup of water that is room temperature, or 20^circ C Write a compound inequality to represent the number recorees liquid. temperatire of the cup must change to no longer be A) 0leqslant 20-cleqslant 100 B) 0leqslant 20+cleqslant 100 C) 20+clt 0or20+cgt 100 D) 20+cleqslant 0or20+cgeqslant 100

## Step 1The problem is asking us to write a compound inequality that represents the temperature change required for water to no longer remain a liquid. The temperature of the water must either be less than or equal to or greater than or equal to .## Step 2The current temperature of the water is . To find the temperature change required, we need to add or subtract a certain amount from .## Step 3If the temperature is less than or equal to , we need to subtract a certain amount from . This can be represented as .## Step 4If the temperature is greater than or equal to , we need to add a certain amount to . This can be represented as .## Step 5Combining these two inequalities, we get the compound inequality or .