Fee for Service For his services, a private investigator requires a $\$ 500$ retainer fee plus $\$ 80$ per hour. Let $x$ represent the number of hours the investigator spends working on a case. (a) Find a function $f$ that models the investigator's fee as a function of $x$. (b) Find $f^{-1}$. What does $f^{-1}$ represent? (c) Find $f^{-1}(1220)$. What does your answer represent?
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This is because the investigator charges a flat fee of $500 plus $80 for each hour of work. (b) Show more…
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For his services, a private investigator requires a 500 dollar retainer fee plus 80 dollar per hour. Let $x$ represent the number of hours the investigator spends working on a case. a. Find a function $f$ that models the investigator's fee as a function of $x$. b. Find $f^{-1} .$ What does $f^{-1}$ represent? c. Find $f^{-1}(1220) .$ What does your answer represent?
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