MT&A uses the function, f(x) = 475 - 15x, to depreciate smart phones, where f represents the value of a smart phone and x represents the number of months since its purchase. Part A: Find f-1, and explain what it represents in this situation. Part B: When will the depreciated value of a smart phone be less than $100? Part C: What does x represent in f-1(x) = 30? What is the value of x

Which expression is equivalent to −16y+13 ? −16(−y+13) 16(−y+2) −16(y+2) 16(−y+13)

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?