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Mathematics, 18.10.2019 01:00 Dweath50
Cell phone company y charges a $10 start up fee plus $0.10 per minute, x. cell phone company z charges $0.20 per minute, x, with no start up fee. which function represents the difference in cost between company y and company z?
a.) f(x) = -0.10x-70
b.) f(x) = -0.10x+10
c.) f(x) = 10x-0.10
d.) f(x) = 10x+0.10
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