What is the value of \( \sqrt{729}-\sqrt{7.29} \) ? \( \begin{array}{llll}\text { A. } 2.7 & \text { B. } 24.7 & \text { C. } 24.3 & \text { D. } 29.7\end{array} \)

A store sells 2.75 liters of juice in one bottle and 1.25 liters in another. How many liters of juice do you have altogether?

Mr nixon and his son went fishing Mr nixon caught a snapper that weighed \( 21 / 2 \) pounds His son caught a snapper that weighed \( 1 / 4 \) Calculate the total weight of the fieh caught.

2. In Buffalo, New York, the temperature was \( { }^{-1} 4^{\circ} \mathrm{F} \) in the morning. If the temperature dropped \( 7^{\circ} \mathrm{F} \), what is the temperature now?

Si el ratio de alumnos a maestras es 4:1 y hay 12 alumnos, ¿cuántas maestras hay?

6. (10 points) Consider the sum \( \sum_{k=1}^{4}(2 k+1) \). (a) Write out the sum in expanded form. (b) Calculate the value of the sum.