Select all of the products of 2.74 • 7.5

2.74x7.5=20.55=20.550
That's all of your answers.

It would be 20.55, and 20.550.
You could add the zero afterward because since there isn't a given third number for the problem it's always a zero after the period! Nothing else works but those two without completely changing the numbers.
Good luck, rockstar, and I hope you pass! (:

Aand b are correctly balanced reactions. they have the same number of atoms in both sides of the reaction