PLS HELP THIS IS FOR A TEST I HAVE 20 MORE MINUTES UNTIL IT SUBMITS ITSELF Your friend wrote and simplified an expression to represent the scenario below and they made an error. Identify what your friend's error was and what revision they can make to fix it.

"A chef added nine hot cubes to a soup, then removed six hot cubes. Finally, the chef removed 12 cold cubes from the soup. How much did the temperature change?"

Your friend's work:

9 - 6 - (-12)

3 - (-12)

-9