the number of tickets sold each day for an upcoming performance of handel's messiah is given by n (x)=-0.5^2+13x+11where x ist eh number of days since the concert was first announced . when will the daily tickets sale and how many tickets will be sold each day???

Question

anonymous · Answer

SO the question is when will be all the tickets sold. Translating to maths, when will the function be =0.
0=-0.5x^2+13x+11 (multiply by -2 to make it easier)
0=x^2-26x-22
(26+-sqrt(26^2+4*22))/2
x=26.82 the other is negative that cannot be a solution
By the end of the 26th day all tickets will be sold.