When a new cellphone is put on the market, the demand each month can be described by the function C(r)=

When a new cellphone is put on the market, the demand each month can be described by the function C(r)= -√t^2+2t-15+3, where C (f) represents the demand of the cellphone
(measured in millions of people) and the time, t, is measured in months. Which of the following solution(s) are valid for a positive demand?
A. (5,3)
B. (3.3)
C. (6,0) and (4,0)
D. (-5, 3) and (3, 3)
(The “+3” is not part of the radical.)

Leave a Reply

Your email address will not be published.