Can someone please help me with this please and thank you it’s due today

Which problem could be  solved  by evaluating the expression  7×(−3)7×-3?

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

This question awards 100 ! i really don’t want to fail i will also mark you !