Answer:
the answer is D
Step-by-step explanation:
Its okay if you still get it right but trust me its right.
An irrational number is a number that can't be written as a simple fraction such as pi because you can't turn pi into a fraction.
The resulting composite function (f∘f)(x) is x⁴+2x²+2
When a function is written inside another function, it is known as a composite function
Given the function f(x)=x²+1,
(f∘f)(x) = f(f(x))
f(f(x)) = f(x²+1)
This means we will need to replace x with x²+1 in f(x) as shown:
f(x²+1) = (x²+1)²+1
Expand
f(x²+1) = x⁴+2x²+1+1
f(x²+1) = x⁴+2x²+2
Hence the resulting composite function (f∘f)(x) is x⁴+2x²+2
Learn more here: brainly.com/question/3256461
Additive inverses combine to get 0. So, k is -1.4. The sum is 0. Hopefully that will help.
