Waht is the day of peak sales and how many tickets if N(x)=-0.4x^2+9.6x+11

This is a peak day and ticket sales question
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1 Answer

Peak sales and number of tickets will come from the vertex.

Complete the square -.4(x^2 - 24x + 144) + 11 + 57.6

-.4(x - 12)^2 + 68.6 is vertex form with vertex (12, 68.6)

So peak sales is day 12, with 68 tickets
by Level 5 User (11.9k points)

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