A parabola has x-intercepts at (3,0) and (9,0) and a maximum at 4. Write the equation of the parabola in vertex form.
Then, convert the equation of the parabola to standard form.

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?