The best and most correct answer among the choices provided by your question is the second choice or letter B "20".
The current area is 120(80)=9600 and he want to expand it by 4400 so that the new area will be 9600+4400=14000
14000=(120+x)(80+x)
14000=9600+200x+x^2
x^2+200x-4400=0
x^2-20x+220x-4400=0
x(x-20)+220(x-20)=0
(x+220)(x-20)=0, since x is an increase it must be greater than zero so
x=20ft
(120+20)(80+20)=14000ft^2
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
Answer:
The answer to your question is: Yes, x - 5 is a factor of the polynomial.
Step-by-step explanation:
To answer this question you need to divide the polynomial by the factor and if there is nothing left, they are factor.
<u>x³ -4x² -7x +10</u>
x -5
x² + x -2
x-5 x³ -4x² -7x +10
-x³ + 5x²
x² - 7x
-x² + 5x
-2x + 10
+2x -10
0 0 These zeros tell us that the linear
expression is a factor of the polynomial
<span>precision is after the decimal point.
</span>
or 
or 