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Mathematics 17 Online
OpenStudy (anonymous):

Which graph best shows the function f(x) = 4(3)-x to represent the rate at which a radioactive substance decays? Graph A Graph B Graph C Graph D

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

the 4 is the y-intercept the negative exponent tells us that the graph is decaying (ie sloping downward)

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