Answer: 2 3/4 as an improper fraction would be B. 11/4
G(r)=25-3r
G(4)=25-3(4)
G(4)=25-12
G(4)=13. Hope it help!
Answer: fg
and
Domain: All real number. All real number or ![(-\infty,\infty)](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%5Cinfty%29)
Explanation:
fg means product of two given function f(x) and g(x)
where,
and ![g(x)=x+4](https://tex.z-dn.net/?f=g%28x%29%3Dx%2B4)
Now, we have to find fg
So, fg=![f(x)\times g(x)](https://tex.z-dn.net/?f=f%28x%29%5Ctimes%20g%28x%29)
Substitute f(x) and f(x)
![\Rightarrow (x^2-16)(x+4)](https://tex.z-dn.net/?f=%20%5CRightarrow%20%28x%5E2-16%29%28x%2B4%29)
Using distributive property simplify above expression and we get,
![\Rightarrow x^3+4x^2-16x-64](https://tex.z-dn.net/?f=%20%5CRightarrow%20x%5E3%2B4x%5E2-16x-64)
We can see it is cubic polynomial. So, domain of cubic polynomial is all real number.
Domain: All real number or ![(-\infty,\infty)](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%5Cinfty%29)
There should be more information than this? what are the two -5 and 5 doing? are they coordinates?