12
Step-by-step explanation:
8.3 / .7
Multiply each by 10 to get rid of the decimal
83/7
We know that 84/7 =12 so this is close to 12
you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.
it would open into a square depending on the type of envelope iβm not sure about the second part