smallest value in image set of f(x)=3x^2+10x+219

[hasu]

Hi, here's the question, please help me!


What is the smallest value, to 2 decimal places, in the image set of the function: f(x)=3x^2+10x+219



THANK YOU!!!

 

[Ishuda]

Hi, here's the question, please help me!


What is the smallest value, to 2 decimal places, in the image set of the function: f(x)=3x^2+10x+219



THANK YOU!!!

What are your thoughts? What have you done so far? Please show us your work even if you feel that it is wrong so we may try to help you. You might also read
http://www.freemathhelp.com/forum/threads/78006-Read-Before-Posting


Hint: What have you been taught about the vertex of a parabola?

 

[stapel]

What is the smallest value, to 2 decimal places, in the image set of the function: f(x)=3x^2+10x+219

What did you see when you graphed this? What did you see when you completed the square to convert this to vertex form? (here) What are your thoughts? Where are you stuck? Please be complete. Thank you!