Problema Solution
the number of tickets sold each day for an upcoming performance is given by N(x)= -0.6x^2+12x+15, where x is the number of days since the concert was first announced. when will daily ticket sales peak and how many tickets will be sold that day.
Answer provided by our tutors
N(x)= -0.6x^2+12x+15,
N'(X)= - 1.2X +12
N'(X)=0
X= 12/1.2=10
N"(X)<0
SO MAX. TIKETS SALES ON X=10
N(10)= 75 TICKETS