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Interpret Key Features of Functions in Context
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Praxis Core
5165.077 Interpret Key Features of Functions in Context
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The function G(t) = t(t – 4)
2
models a nonnegative quantity in a lab for t >= 0. Which interpretation of the intercepts is correct?
A
The quantity is negative between t = 0 and t = 4.
B
The quantity reaches its maximum at both t = 0 and t = 4.
C
The quantity is 0 at t = 0 and t = 4, with the graph touching the axis at t = 4.
D
The graph has no x-intercepts because the squared factor is never negative.
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