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Define variables and write systems of equations for the situation. Solve using substitution. Suppose you want to join a video store. Big video offers a special discount card that costs $9.99 per year. With the discount card, each video rental costs $2.49. A discount card from Main Street Video cost $20.49 per year. With the Main Street Video discount card, each video rental costs $1.79. After how many video rentals is the cost the same? A. 17 B. 15 C. 9 D. 10. Please select the best answer from the choices provided.​

Respuesta :

clarch19

Answer:

(B) $15

Step-by-step explanation:

Big Video:  y = 2.49x + 9.99

Main Street:  y = 1.79x + 20.49

easiest way to solve would be to graph and find the point of intersection or set 2.49x + 9.99 and 1.79x + 20.49 equal to each other

2.49x + 9.99 = 1.79x + 20.49

subtract 1.79x from each side to get:

.70x + 9.99 = 20.49

subtract 9.99 from each side to get:

.70x = 10.50

divide each side by .70

x = 15

Answer:

B. 15

Step-by-step explanation:

Because i did it on edge

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