The answer is B-Associative Property
Answer:
The answer is $10.32aprox
Step-by-step explanation:
I hope it will help u
Please mark me as brainlist
First you had to switch sides of equation.

Then you divide by two from both sides of equation form.

Simplify.

Next, subtract by i from both sides of equation form.

Finally, simplify by equation.

Final answer: 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie