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Video club A charged $10 for membership and $3 for movie rental. Video Club B charges $15 for membership and $2 per movie rental. For how many movie rentals will the cost be the same at both video clubs? What is that cost?

Respuesta :

write an equation

10 + 3x = 15 +2xΒ 
Β  Β  Β  -2x Β  Β  Β  Β  Β  -2x
-----------------------
10 + x (1x)Β = 15
-10 Β  Β  Β  Β  Β  Β  Β  Β -10
----------------------
x = 5

cost= 25 (10 + 15)Β 

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