\( z \) varies directly as the square of \( x \) and inversely as the cube of \( y \). If \( z=129 \) when \( x=9 \) and \( y=4 \), find \( z \) if \( x=7 \). and \( y=3 \). Round your answer to two decimal places if necessary.

Quadratic Formula Write the equation in standard form. Then solve by the quadratic formula. \( \left.\qquad \begin{array}{l}\text { Question } 9.2 \\ \text { Part } 2 \text { of } 2\end{array}\right)=-48 \)

Write the equation in standard form \( 2 x^{2}-6 x+7=0 \)

Compute the value of the discriminant and give the number of real solutions of the quadratic equation, \( 3 x^{2}-7 x+2=0 \) Discriminant: Number of real solutions:

Solve for \( x \) by using the quadratic formula. \( 0.107 x^{2}+0.032 x-0.482=0 \)

2. \( (x-4)=18 x= \)