Answer is 360. Let me know if you need a. explanation. it's kind of weird. you have to sort of combine all the angles and see that they form a complete circle.
Yes, this is a proportional relationship because when the price of the item increases, you have to pay more tax.
Examples
$100 item, pay 8.25 tax
$200 item, pay 16.5 tax
Not equal !! i hope this helped :))
1,000 ¥ / $8 = 125 ¥ per $1
650 ¥ / 125 ¥ = $5.20
The answer is A. $5.20