If the sales tax rate is 8%, how much tax would Louis pay for a pair of pants for $18 and two shirts for $9.99 each?
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First you write what the vectors are, then you subtract z from w by subtracting their corresponding values <-4-3,1-4>= <-7,-3>, then to get subtracting the next answer you subtract w from z which is <3--4,4-1> = <7,3>
