Answers

2014-06-18T10:18:44+08:00
Just substitute your value of  y = 30 to the equation to find the value of x:


So we will have:

y = 2x + 4
30 = 2x + 4
30 - 4 = 2x 
26 = 2x
26/2 = x 
13 = x ANSWER

Therefore there are 13 songs downloaded for the cost spent at 30php.
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