Aldrin measured the outdoor temperature. The thermometer read less than -15 degrees Celcius. Which statement describes the outdoor temperature?
A. The outdoor temperature is 15 degrees below zero.
B. The outdoor temperature is 15 degrees above zero.
C. The outdoor temperature is colder than 15 degrees below zero.
D. The outdoor temperature is warmer than 15 degrees above zero.

Question

calculusxy · Answer

@hartnn

btaylor · Answer

I'd draw a number line:
|dw:1394899942572:dw|
Is -15 degrees above or below 0?

calculusxy · Answer

I have got C. I wanted to make sure whether I was correct or incorrect.

btaylor · Answer

not quite. You know that the temperature is EXACTLY 15 degrees below zero, not a little warmer or a little colder.

calculusxy · Answer

But what about when it says that it read LESS THAN 15 degrees Celsius?

btaylor · Answer

oops. my bad. So you were right.
*facepalm*

calculusxy · Answer

No problem. I just wanted to make sure. Thank you for helping :)

btaylor · Answer

anytime.