halp

Can't see the polynomial. 

suppose f is a polynomial such that f(0)=47, f(1)=32

$f(2) = -13$ and 

$f(3)=16$

What is the sum of the coefficients of ?

Suppose $f$ is a polynomial such that $f(0) = 47$, $f(1) = 32$, $f(2) = -13$, and $f(3)=16$. What is the sum of the coefficients of $f$?

Let $f(x) = x^4-3x^2 + 2$ and $g(x) = 2x^4 - 6x^2 + 2x -1$. What is the degree of $f(x) \cdot g(x)$?