Homework Help: math

Posted by Punkie on Friday, January 8, 2010 at 5:32pm.

Could someone please help me with this problem I don't know how to solve it and I am terrible at word problems.

The amount of background noise is important to television news reporters. One station developed the formula N = -t^2 + 12t + 54 showing the noise level in decibels (N) as it relates to the time after the speaker stops talking in seconds (t). How many seconds after the speaker stops will the noise level be the greatest? Write and tell how you decided.

math - Marth, Friday, January 8, 2010 at 7:25pm
N is parabolic; the maximum occurs at the vertex. The vertex has an x-value that is halfway between x-intercepts, which can also be found by a graphing utility or by calculus.

Answer this Question

Related Questions

math - Can someone please help me with this word problem!?! I know the answer ...
Algebra - Here is the problem: A two-digit number is eight times the sum of its ...
5th grade math (word problems) - I'm not sure how to solve the following ...
Algebra 1 - Can someone help me solve this problems please? Thank you very much ...
Algebra - Here is the problem: A two-digit number is eight times the sum of its ...
algebra 1 - Can someone please help me with this inequality problem -3-8&gt...
Algebra - Can someone please help me with math problem and explain to me step by...
3rd grade - Good evening ~ I have 2 questions. Kelsey was assigned math homework...
WORD PROBLEMS HELP - CAN SOMEONE PLEASE HELP ME WITH ASSISTENCE ON THE PREVIOUS ...
Math - Do you know of a good website that can help me with word problems? I want...

For Further Reading

First Name:
School Subject:
Answer: