Math Worksheet With Answer Key - Patterson Page 9
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58) The logistic growth function f(t) =
describes the population of a species of
58)
1 + 6.3e -0.27t
butterflies t months after they are introduced to a non-threatening habitat. What is the
limiting size of the butterfly population that the habitat will sustain?
320
59) The logistic growth function f(t) =
describes the population of a species of
59)
1 + 7.0e -0.22t
butterflies t months after they are introduced to a non-threatening habitat. How many
butterflies were initially introduced to the habitat?
Determine whether the given ordered pair is a solution of the system.
60) (4, 5)
60)
x + y = 9
x - y = -1
61) (5, -1)
61)
x + y = -6
x - y = -4
Solve the system of equations by the substitution method.
62)
62)
y = 2x - 4
3y + 9x = -72
Solve the system by the addition method.
63) 4x + 7y = -10
63)
-4x - 11y = 18
64) 4x + y = 1
64)
6x + 4y = -1
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