$46 shoes 2.9 tax round to the nearest cent

$46 with 2.9% tax is:

($46 * 0.029) + $46 = $47.334

2.9% is the same as 0.029, since % means divide by 100 (move decimal 2 places to the left).
You first multiply by 0.029 to see how much the tax is, then you add back the original $46.

It is going to be the third choice