To solve this, I would square root all of the possible answers and see which ones the arrow falls between. After that I would choose the answer closest to it.
Hope this helps!
Answer:
x>4
Step-by-step explanation:

Sorry if there is any mistakes
Answer: 31 cents
Step-by-step explanation: Since sales tax is 6%, in decimals, that is 0.06. Then you multiply the total of the bill by the tax amount to get how much she will be paying in tax.
5.20 x 0.06 = 0.312
Then you round to the nearest hundreth since you can't have a fraction of a cent to get 0.31