You need to watch a video on polynomials, that's how i learned to factor Polynomials
https://www.youtube.com/watch?v=5MA1eZVegg4 - click on the uploader and you'll find how to factor it.
i can't GIVE u the answers but YOU WILL LEARN IT :)
Answer:
The intensity on a screen 70 ft from the light is 1.728 foot candle.
Step-by-step explanation:
Given that,
The magnitude of intensity 
of light varies inversely as the square of the magnitude of distance D from the source.
That is
Then,
Given that,
The magnitude of intensity of illumination on a screen 56 ft from a light is 2.7 foot-candle.
Here,
=2.7 foot-candle, 
= 56 ft
=?, 
= 70 ft.
foot-candle
The intensity on a screen 70 ft from the light is 1.728 foot candle.
Step-by-step explanation:
In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. so i think B and D
