Find the value of the following polynomial at the indicated value of the variable:
$p(x) = x^{2} + 5x - 24$ at $x = 3$

Determine the degree of the following polynomial:
$x^{3}-9x+3x^{5}$

Write the coefficient of $x^{2}$ in each of the following:
$(i)$ $(x-1)(3 x-4)$
$(ii)$ $(2 x-5)(2 x^{2}-3 x+1)$

Which of the following expressions are polynomials in one variable and which are not? State the reason for your answer. If the given expression is a polynomial,state whether it is a polynomial in one variable or not.
$x^{2} + x - 3 + \frac{4}{x}$

Which of the following expressions is a polynomial? State the reason. If an expression is a polynomial,state whether it is a polynomial in one variable or not: $x^{2}-15x+50$

Classify the following as a constant,linear,quadratic,or cubic polynomial:
$3x^3$