Solve. Factor each expression. b.5y^{3}+135

Determine whether the following function is a polynomial function. If the function is a polynomial​ function, state its degree. If it is​ not, tell why not. Write the polynomial in standard form. Then identify the leading term and the constant term.
$g(x)=3-\frac{x^2}{4}$

How do you find the degree of ${\displaystyle 17x^3+3x^2-2x-2y^4-1}$?

Solve by factorization.
$3x^2+18x+15=0$

How do you multiply (2n+2)(6n+1)?

Solving the logarithimic inequality ${\log }_2\frac{x}{2}+\frac{{\log }_2{x}^2}{{\log }_2\frac{2}{x}}\le 1$
I tried solving the logarithmic inequality:
${\log }_2\frac{x}{2}+\frac{{\log }_2{x}^2}{{\log }_2\frac{2}{x}}\le 1$
several times but keeping getting wrong answers.

Factor ${\displaystyle 3x^2-1x-2}$

A bird flies in the xy-plane with a position vector given by ${\displaystyle \overrightarrow{r}=(\alpha t-\beta t^3)\hat{i}+\gamma t^2\hat{j}}$, with ${\displaystyle \alpha =2.4\frac{m}{s},\beta =1.6\frac{m}{s^3}}$ and ${\displaystyle \gamma =4.0\frac{m}{s^2}}$. The positive y-direction is vertically upward. At the bird is at the origin.
Calculate the velocity vector of the bird as a function of time.
Calculate the acceleration vector of the bird as a function oftime.
What is the bird's altitude(y-coordinate) as it flies over x=0 for the first time after ?