Emilia bought 4 pairs of socks and 3 DVDs. The DVDs were originally priced at $15 but were marked down by S and each pair of socks costs $2. Which expression shows the total amount Emilia will have to pay before tax? 4x15-7+3x2 O4x (15-7)+3x2 O 3×15-7+4x2 O 3x (15-7)+4×2

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