Step-by-step Answer
PAGE: 159SET: ExercisesPROBLEM: 36
Please look in your text book for this problem Statement

The revenue function is .


At what price ,the revenue is zero.

Therefore  ball will strike the ground at distance 

Substitute in .

or .

The revenue is zero where price is $ and $.


The revenue  is$ .

Therefore substitute in .

Find the vertex of above quadratic function .

Compare it to .

, and .

Since , then the parabola open upward.

coordinate of vertex is



Graph the quadratic equation 

Draw the coordinate plane.

Plot the intercepts and vertex.

Connect the plotted points.

observe the graph:

The price is in between $ and $.

Hence .

(a).The price is $ and $.



"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!"

June Barnett

"Your site is amazing! It helped me get through Algebra."


"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful."

Dan Pease

Simply chose a support option

My status

JOIN US ON:     
mathskey.com is not affiliated with any Publisher, Book cover, Title, Author names appear for reference only