B. -3
The value of a for given polynomial is -3
<h3>
Explanation:</h3>
<em>Factor theorem for polynomials,</em>
<u><em>If (x-c) is a factor of polynomial f(x), then f(c)=0</em></u>
Given: x+a is a factor of polynomial 
Let 
By Factor theorem, since x+a is a factor of f(x),
![(x+a)=[x-(-a)]\\So,\ f(-a)=0](https://tex.z-dn.net/?f=%28x%2Ba%29%3D%5Bx-%28-a%29%5D%5C%5CSo%2C%5C%20f%28-a%29%3D0)
Substituting 
in f(x)=0, we get
![f(x) = 4x^3-13x^2-ax = 0\\f(-a)= [4(-a)^3]-[13(-a)^2]-[a(-a)] = 0\\(-4a^3-13a^2+a^2)=0\\(-4a^3-12a^2)=0\\-4a^3=12a^2\\\frac{a^3}{a^2} =\frac{12}{-4} \\\\a=(-3)](https://tex.z-dn.net/?f=f%28x%29%20%3D%204x%5E3-13x%5E2-ax%20%3D%200%5C%5Cf%28-a%29%3D%20%5B4%28-a%29%5E3%5D-%5B13%28-a%29%5E2%5D-%5Ba%28-a%29%5D%20%3D%200%5C%5C%28-4a%5E3-13a%5E2%2Ba%5E2%29%3D0%5C%5C%28-4a%5E3-12a%5E2%29%3D0%5C%5C-4a%5E3%3D12a%5E2%5C%5C%5Cfrac%7Ba%5E3%7D%7Ba%5E2%7D%20%3D%5Cfrac%7B12%7D%7B-4%7D%20%5C%5C%5C%5Ca%3D%28-3%29)
Therefore, value of a is (-3)
The correct answer is <span>A: he was known for his serious attitude and deep thinking
He came from a family that was wealthy because his dad was a rich businessman. Both his parents came from historically wealthy families that even have roots in old England wealth. He did get the degrees but wasn't known for being serious.
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Answer: B
to have easier access to services such as loans and insurance
The correct answer is B. The potential for the results to improve the world is not evident.
Explanation:
Utilitarianism is a philosophical perspective ad theory that focuses on increasing the well-being and happiness of individuals while decreasing suffering or pain. Also, for utilitarians, the practical uses and results prevail over other factors. Due to this, utilitarians might argue science is not valuable because a big part of it is understanding how natural phenomenons work, and this might be considered to lack practical uses or to help the world improve. Thus, the reason for a utilitarian to argue against the value of science is that "the potential for the results to improve the world is not evident".
