How much will he pay for?
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Answer:
$14.25 is the answer but to clear things up it is $2.25 for a bag of pop corn and $1.50 for a soda 5x2.25= 11.25 2x1.50=3 ,3+11.25=$14.25. and you can check that by using the amount for the pop corn and the soda in the first 2 equations :)