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15-02-2018
Mathematics

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susanwiederspan susanwiederspan

15-02-2018

The correct answer is A.

h is the independent variable. The rate at which she is hiking is 2.5 km/hr. The dependent variable, h(x), is equal to 12 for a certain h.

[tex]h(x) = 2.5h + 4[/tex]
[tex]12 = 2.5h + 4[/tex]
[tex]8 = 2.5h[/tex]
[tex]h=3.2[/tex] hours

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