A cell phone factory has a cost of production C(x) = 66x + 30,000 where x is the total number of attendees at the concert . The
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Given that the two triangles are similar:
= 
=
6x + 28 = 4 x 25
6x + 28 = 100
6x = 100 - 28
6x = 72
x = 12
6x + 28 = 4 x 25
6x + 28 = 100
6x = 100 - 28
6x = 72
x = 12