Functions \(f\) and \(A\) are defined by these equations. 

 Which function has a greater value when \(x\) is 2.5?

An equilateral triangle has three sides of equal length. Function \(P\) gives the perimeter of an equilateral triangle of side length \(s\).

1. Find \(P(2)\)
2. Find \(P(10)\)
3. Find \(P(s)\)

Imagine a situation in which a person is using a garden hose to fill a child's pool. Think of two quantities that are related in this situation and that can be seen as a function. 

1. Define the function using a statement of the form “\(\underline{\hspace{0.5in}}\) is a function of \(\underline{\hspace{0.5in}}\)." Be sure to consider the units of measurement.

2. Sketch a possible graph of the function. Be sure to label the axes.

   Then, identify the coordinates of one point on the graph, and explain its meaning.

   

Function \(C\) gives the cost, in dollars, of buying \(n\) apples. 

Which statement best represents the meaning of \(C(10)=9\)?

Diego is baking cookies for a fundraiser. He opens a 5-pound bag of flour and uses 1.5 pounds of flour to bake the cookies.

Which equation or inequality represents \(f\), the amount of flour left in the bag after Diego bakes the cookies?