Final answer:
The correct expression to calculate the difference in the price of the phone after a 28% decrease from the original price of $480 is $480 × 0.28, which equals $134.40. The options given seem to be incorrect as they suggest multiplying 16 by various percentages which are not related to the original problem. Therefore, none of the provided expressions correctly calculate the price decrease.
Step-by-step explanation:
The student is asking for the expression that calculates the difference in the price of a phone before and after a 28% decrease from its original price of $480. To find this difference, we need to calculate 28% of the original price and then subtract that value from the original price itself.
First, let's calculate 28% of $480:
0.28 × $480 = $134.40
This is the amount by which the price has decreased. Now, we need to express this as an expression using the given options. Since none of the provided options correctly expresses the dollar amount as a multiple of 16, it appears there might be an error in the question. The correct mathematical expression for the price difference should be $480 × 0.28.
However, if we were required to use one of the given options, we would look for the one that could form the difference. Since 28% represents the decrease and the original price is $480, any correct option should reflect the 28% decrease. The provided options appear to be based on an incorrect premise, as none of them correctly represent 28% of $480.