= 0, = p p −1900 + 1200000 < 0 p2 p 2 1000 Thus, the revenue equals zero when = $0 p and when = $1000. p ( − + < 1 3800 2400000) 0 p2 p b. Find the values of for p 2 ( ) = − 4 + 4000 > 800000 R p p2 p ( ( 1 − 800) − 3000) < 0 p p 2 − 4 + 4000 > p2 p The zeros are = 800 and = 3000 . p p 800000 − 4 + 4000 − 800000 p2 p > 0 s( p) + − 1 1900 1200000 p2 p 2
p = 0, p = 1000 p2 −1900 p + 1200000 < 0 2 Thus, the revenue equals zero when p = $0 and when p = $1000. b. Find the values of p for R ( p ) = − 4 p2 + 4000 p > 800000 1 ( p2 − 3800 p + 2400000) < 0 2 1 ( p − 800) ( p − 3000) < 0 2 − 4 p2 + 4000 p > 800000 The zeros are p = 800 and p = 3000 . − 4 p2 + 4000 p − 800000 > 0 s( p) 1 p2 + 1900 p − 1200000 2
Downloadable-Solution-Manual-for-Precalculus-Concepts-Through-1.docx