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the service tip for the waiter is 20%. The total cost of a meal is calculated as c + 0.20c. How much would you have to pay if you have a meal that costs $21.00?

Respuesta :

TheStranger

Answer:

$25.20

Step-by-step explanation:

Cost of the meal = $21

Total cost

= c + 0.20c

= 21 + 0.20(21)

= $25.20

carlosego

For this case we have the following function, to calculate the total cost of the meal, including 20% of the tip:

[tex]f (c) = c + 0.20c[/tex]

They tell us that a meal costs $ 21.00. That is,[tex]c = 21[/tex]

[tex]f (21) = 21 + 0.20 (21)\\f (21) = 21 + 4.2\\f (21) = 25.2[/tex]

Thus, the total cost of the meal is 25.2

Answer:

$ 25.2

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