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Mathematics 15 Online
OpenStudy (anonymous):

I WILL GIVE MEDAL! Which of the following exponential functions goes through the points (1, 20) and (2, 80)? f(x) = 5(4)−x f(x) = 4(5)−x f(x) = 5(4)x f(x) = 4(5)x

OpenStudy (wendy.ivette11714):

The second one

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