Math on the Spot Sophia uses \( 3 \frac{3}{4} \) cups-bf flour for each cake she makes. She has a 10 -pound bag of flour that cost \( \$ 8.79 \) and contains 152 quarter-cup servings. A. How many cakes can Sophia make with this flour? B. Use your answer from Part A to find the cost of the flour for each cake Round your answer to the nearest cent.

Find all the second partial derivatives. \( w_{u u}=\sqrt{u^{7}+v^{9}} \) \( w_{u v}=0 u^{5} \) \( w_{v u}=0 \) \( w_{v v}=72 v^{7} \)

Si \( y=\sec ^{-1}\left(e^{4 x}\right) \), entonces la derivada de \( y \) es: a. \( 4 /\left(e^{8 x}+1\right)^{1 / 2} \) b. \( 4 /\left(e^{8 x}-1\right) \) c. \( 4 /\left(e^{8 x}-1\right)^{1 / 2} \) d. \( 4 /\left(e^{8 x}-1\right)^{1 / 2} \)

\( \begin{array}{ll}(3-x, 5)=(4, y+2) & 6268 x= \\ \text { (A) } 0 & \text { (B) }-1\end{array} \)

Simplify: \( \frac{25-25 y^{2}}{3 y^{2}-3} \div \frac{9 y^{2}-6 y+1}{3 y^{2}-3} \times \frac{(3 y-1)^{2}}{-5 y^{3}+5 y} \)

Put the following values into ascending order: \[ \frac{18}{7}, \quad 2 \frac{3}{5}, \quad \frac{23}{6}, \quad 1 \frac{5}{8} \]