Find the value of the polynomial $p(x) = 5x^2 - 3x + 7$ at $x = 1$.

(9) Given the polynomial $p(x) = 5x^2 - 3x + 7$.
To find the value of the polynomial at $x = 1$,we substitute $1$ for $x$ in the expression:
$p(1) = 5(1)^2 - 3(1) + 7$
$p(1) = 5(1) - 3 + 7$
$p(1) = 5 - 3 + 7$
$p(1) = 2 + 7$
$p(1) = 9$
Therefore,the value of the polynomial at $x = 1$ is $9$.