ces of “roti canai" in a da

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 91E
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12. Makcik Kiah is a “roti canai" seller. The daily profit that she can obtain, in RM is given by
5x - 45
function f (x)=
where x is the number of “roti canai" sold in a day.
3
i)
On average, Makcik Kiah sold 54 pieces of "roti canai" in a day. What is her average daily
profit?
ii) Estimate the total profit obtained by Makcik Kiah in March if she sells “roti canai" everyday
for that month?
iii) Determine the minimum number of "roti canai" that she must sell in a day so that she does not
experience any loss.
Transcribed Image Text:12. Makcik Kiah is a “roti canai" seller. The daily profit that she can obtain, in RM is given by 5x - 45 function f (x)= where x is the number of “roti canai" sold in a day. 3 i) On average, Makcik Kiah sold 54 pieces of "roti canai" in a day. What is her average daily profit? ii) Estimate the total profit obtained by Makcik Kiah in March if she sells “roti canai" everyday for that month? iii) Determine the minimum number of "roti canai" that she must sell in a day so that she does not experience any loss.
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