First, here is a solution file for Ricardo1 Solution

Ricardo ran another unusual course. One hundred (100) people (reporters) stood along the track at various distances from the start. The only information each person had was the speed (in meters/sec) at which Ricardo entered the reporter's segment and the number of seconds it took Ricardo to complete the segment. When Ricardo passed the end of a segment, the reporter for that segment relayed Ricardo's speed as Ricardo entered the segment and the number of seconds Ricardo spent in that segment.

Reported speeds and times are in a table in the Graphing Calculator (GC) file linked below, in the columns labeled **R** and **T**. To represent (access) an entry, such as **R**_{12}, type

**R** ctrl-L 12 $\rightarrow$.

Typing ctrl-L puts GC in subscript mode. Pressing $\rightarrow$ causes the cursor to move to the next element in the expression, or to the end.

Reminders:

- Type ctrl-L for a subscript
- Press "$\rightarrow$" to escape an exponent, subscript, or move to the next element in an expression.
- Type "*" for multiplication, "/" for division, "+" for addition, "-" for subtraction or negation, and "^" for exponent
- Type ctrl-shift-S for a summation sign ($\sum$)

Download *Ricardo2 * and define functions to represent values of quantities described in it.