The balance in a savings account is defined by the function . This graph represents the function.

1. Find the values:
2. Calculate .
3. You should have gotten the same value twice. What does this value have to do with this situation?

Here are a graph and a table that represent the same function. The function relates the hour of day to the outside air temperature in degrees Fahrenheit at a specific location.

0	48	6	57
1	50	7	56
2	55	8	55
3	53	9	50
4	51.5	10	52
5	52.5

Scatterplot. Horizontal axis, time in hours. vertical axis, temperature in degrees fahrenheit. Points plotted at 0 comma 48, 1 comma 50, 2 comma 55, 3 comma 53, 4 comma 51 point 5, 5 comma 52 point 5, 6 comma 57, 7 comma 56, 8 comma 55, 9 comma 50, and 10 comma 52.

Match each expression to a value. Then explain what the expression means in this situation.