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The amount of time (t) in minutes it takes to make a coffee at Starbucks is related to (n) the number of coffee’s they purchase. The equation is t = 2n – 3. How long does it take if a customer buys 5 coffees?
t = 2n – 3....... How long does it take if a customer buys 5 coffees?
t = 2(5) - 3 = 10 - 3 = 7 minutes