-28° represents the number of degrees the temperature drops . Correct option A) -28° .
Step-by-step explanation:
Here we have , The temperature drops 28°. After the drop, the thermometer reads 48°. Let us suppose that initially the temperature was x , and after drop it's 48 i.e.
x - (28) = 48
We are supposed to tell that how from how many temperatures drop is there , which is -28° where 28 tells us about the value or number that temperature is dropped & - ( minus) sign indicates that there is fall or drop in temperature . So , drop in temperature is given by -28° .
Hence , -28° represents the number of degrees the temperature drops . Correct option A)-28° .
