People answer this question i need ! who ever gives me the right answer first will get all of my points, just answer ! : (

which one doesn't belong? in each pair, the first value is the regular price of an item and the second value is the price with gratuity. identify the pair that does not belong with the other three. explain your reasoning. ($30, $34.50) ($54, 64.80) ($16, $18.40) ($90, $103.50)