Use the rule \( \log _{b}(x y)=\log _{b} x+\log _{b} y \) to find \( \log _{2}(16 \cdot 64) \). (1 point)

Form a polynomial whose real zeros and degree are given. Zeros:-5,-4,3,5; degree: 4 . A polynomial with integer coefficients and a leading coefficient of 1 is \( f(x)= \). (Simplify your answer.)

(2) \( x^{2}-7 x-18 \rightarrow x^{2}+b x+c \)

Express the product of \( (2+\sqrt{-9}) \) and \( (3-\sqrt{-16}) \) in the form \( a+b i \). (complex and imaginany

Let \( f(x)=|x|, g(x)=x-3 \), and \( h(x)=x^{2} \) Write \( N(x)=x-6 \) as a composition of functions.

20) \( \begin{array}{l}2 x+3 y=-12 \\ 5 x-3 y=-9\end{array} \)