Using the following prices, calculate the unit price to determine how much it would cost for 7 granola bars and 9 bottles of water.$7.14 for 6 granola bars$8.72 for 8 bottles of water

A granola bar costs $7.14 ÷ 6 = $1.19, so 7 bars cost 7 × $1.19 = $8.33. A bottle of water costs $8.72 ÷ 8 = $1.09, so 9 bottles cost 9 × $1.09 = $9.81. The total is $8.33 + $9.81 = $18.14, which is choice A.

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