At Halloween Calum dressed up and went trick or treating for candy. At the end of the night, he had 180 pieces of candy. He reasoned that if he ate half of his candy every week, he would never run out of candy. What is the initial value? What is the constant ratio? If \( x \) is the number of weeks since Halloween, and \( y \) is the number of pieces of candy, then write an equation that represents the amount of candy over time.

\( 6 a ^ { 2 } + 3 a c + 4 a b + 2 b \)

4. Realiza las operaciones indicadas y simplifica el lesultado: \( \begin{array}{ll}\text { A) } \frac{x^{2}-64}{2 x^{2}+16 x}= & \frac{\text { B) } 3 x-9}{x^{2}-9 x+18}=\end{array} \)

3Ldentifica y realiza los siguentes productos notables de polinomios: \( \begin{array}{ll}\text { A) }(2 a b+7 c)(2 a b-7 c)=\quad & \text { b) }(5 a-2 b)^{2}=\end{array} \)

Jason earns an hourly wage of \( y \) dollars. If he works \( h \) hours in a week, write a linear expression representing his weekly earnings.

23. \( x^{3}-3 x=-1 \) olarsa, \( x^{2}+\frac{1}{x^{2}} \) ifadəsinin qiymatini tapın.