Function \(C\) gives the cost, in dollars, of buying \(n\) apples. What does each expression or equation represent in this situation?

1. \(C(5)=4.50\)
2. \(C(2)\)

A number of identical cups are stacked up. The number of cups in a stack and the height of the stack in centimeters are related.

1. Can we say that the height of the stack is a function of the number of cups in the stack? Explain your reasoning.
2. Can we say that the number of cups in a stack is a function of the height of the stack? Explain your reasoning.

The number of cups in a stack is a function of the height of the stack in centimeters.

1. Sketch a possible graph of the function on the coordinate plane. Be sure to label the axes.
2. Identify one point on the graph, and explain the meaning of the point in the situation.

Solve each system of equations without graphing. Explain or show your reasoning.

1. \(\begin{cases} \text-5x+3y=\text-8 \\ \hspace{1.5mm}3x-7y=\text-3 \\ \end{cases}\)

2. \(\begin{cases} \text-8x-2y=24 \\ \hspace{1.5mm}5x-3y=\hspace{2.5mm}2 \\ \end{cases}\)