Mathematics

Mathematics, 16.09.2019 05:30, Christyhanes3764

Mt& a uses the function f(x)=475-15x-15x. to depreciate smart phones. where f represents the value of smart phone and x represents the number of months since its purchase.
a) find f^-1 and explain what it represents in this situacions
when will the deprecated value of smart phone be less than $100.00?
what does x represent in f^-1(x) =30? what is the value of x?
graph f(x) and f^-1 (x) on the same coordinate

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