SOLUTION: The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.6x^2+18x+12, where x is the number of days since the concert was first annou
Question 430491: The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.6x^2+18x+12, 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 by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Hi
N(x)=-0.6x^2+18x+12 |represents a parabola opening downward
N(x)=-0.6[(x-15)^2 - 225)+12 |completing the square to find the vertex
N(x)=-0.6(x-15)^2 +135 + 12
N(x)=-0.6(x-15)^2 + 147 Sales will peak on the 15th day with 147 tickets sold