The answer will depend on what the tax is - and that will depend on what fiscal authority you are talking about. And since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
105.00 plus tax
That depends how much the tax is.
It depends on what % the tax is.
That all depends on the tax-rate. The question is asking "How much is 499.99 plus more ?"
79.99 plus 9.25 tax is 87.39 .
105.00 plus tax
How much is 349 plus 0.6 tax
That depends how much the tax is.
276 + 245 = 521
276 + 254 = 530.
That depends on how much the tax is.
It depends on what % the tax is.
Depends on the tax rate. e.g. 100 plus 20% tax = 120
That all depends on the tax-rate. The question is asking "How much is 499.99 plus more ?"
79.99 plus 9.25 tax is 87.39 .
That depends what the level of tax is.
It depends on the rate of tax.