4 MT&A uses the function f(x) - 475 - 15x. to depreciate smart phones
where f represents the value of a smart phone and represents the
number of months since its purchase
Part A Find - and explain what it represents in this situation,
f(x) 495-15
Part B: When will the depreciated value of a smart phone be less than
$1002
Part C: What does x represent in f(x) = 308 What is the value of x?
Part D: Graph f(x) and f(x) on the same coordinate plane below
y