Answer: you need 3 cups of cream and 9 cups of dark chocolate
Step-by-step explanation:
Multiply (-5) and (7) together to get -35
Then multiply (6) and (-2) together to get -12
Finally multiply -35 and -12 together to get 420
So your answer to this is 420
Hope this helped :)
Have a good day
Need more info about the 3 younger siblings