Answer:

Step-by-step explanation:
We are given: 
We will use integration by parts.


f(x)=x-4f(3)=3-4so f(3)= -1
Answer:
It is a rational number
Step-by-step explanation:
3/8 = 0.375
The set of rational numbers is of measure zero on the real line, so it is "small" compared to the irrationals and the continuum.
Any rational number is trivially also an algebraic number.
a=2
b=6
c=-6
You can use the substitution method to solve.