A baseball team plays in a stadium that holds 65,000 spectators. With the ticket price at \( \$ 15 \), the average attendance at recent games has been 36,000 . A market survey indicates that for every dollar the ticket price is lowered, attendance increases by 4000 . 6. What ticket price is so high that no revenue is generated?

\( ( \frac { 15 } { 18 } ; \frac { 27 } { 72 } ) \)

Brpress the quadric form \( f(x, y)=x^{2}+4 x y+5 y^{2} \) in matrix form, \( f(\vec{x})=\vec{x}^{T} A \vec{x} \) where where \( \vec{x}=\left(\begin{array}{c}x \\ y \\ z\end{array}\right) \).

4. El diámetro de la Ilanta de un automóvil mide 60 cm . ¿Cuántos metros avanza el automóvil, cuando la llanta ha dado 25 vueltas?

24 1 point The following lists either the pKb or Ka values for five different unknown compounds. Based on the list below, which compound will be the stronger base? Compound "AB" has a pKb of 8.94 Compound "CD" has a Ka of \( 1.5 \times 10^{-8} \) Compound "EF" has a pKb of 10.32 Compound "GH" has a Ka of \( 3.0 \times 10^{-9} \) Compound "IJ" has a pKb of 9.73

\( \left\{\begin{array}{l}\text { Starn } \\ \left\{\begin{array}{l}x-y=-6 \\ x+y=-8\end{array}\right.\end{array}\right. \)