What are the values of a, b, and c in the quadratic equation 0 = 5x - 4x22?
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a = 5, b = 4, c = 2
a = 5, b = 4,C=-2
a=-4, b = 5, C = -2
a = 4, b = -5, C = -2

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.