After a recent flood the water level of a river is 43 feet, measurements show that it is receding at a rate of 3 feet per day. The function W = f(d) = -3d + 43 represents the water level (in feet) of the river after d days. Determine a formula for the inverse function.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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After a recent flood the water level of a river is 43 feet, measurements show that it is
receding at a rate of 3 feet per day. The function
W = f(d) = -3d + 43 represents the water level (in feet) of the river after d
days. Determine a formula for the inverse function.
Of-(W) = -
W+43
3
Of-'(W) = -W – 43
Of-'(W) = –3d + 43
Of-'(W) =
-3W+43
Of-(W) =
W-43
%3|
3
Transcribed Image Text:After a recent flood the water level of a river is 43 feet, measurements show that it is receding at a rate of 3 feet per day. The function W = f(d) = -3d + 43 represents the water level (in feet) of the river after d days. Determine a formula for the inverse function. Of-(W) = - W+43 3 Of-'(W) = -W – 43 Of-'(W) = –3d + 43 Of-'(W) = -3W+43 Of-(W) = W-43 %3| 3
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