Question 1172692
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Hi  
 Let x represent the phone call minutes    
Infinity: .20 + .10x
Long call: .20x 
Find the number of minutes for which both phone companies charge the same price.
.20 + .10x = .20x
.20 = .10x
.20/.10 = x
x = 2  the number of minutes for which both phone companies charge the same 
CHECKING our answer***
.20 + 20 = .20*2  Checks!
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