Use the graph to answer the questions.
At what elevation did Julio begin?
At what elevation did Kathy begin?
Elevation (miles)
Who made it to 8 miles first?
Who experienced a greater elevation change?
The hours)

Step-by-step explanation:

The elevation at which each started is where their respective graphs go through the y axis.  Julio's graph goes through the y axis at 4 miles and Kathy's goes through at 0 miles, or in other words, on the ground.

As far as who made it to 8 miles first.  Locate the 8 on the y-axis and go straight across, following that horizontal line y = 8.  The first graph you run into on that horizontal line is Kathy's.  Where her graph meets y = 8, drop straight down to the x-axis and see that she hit 8 miles at a little over 16 hours.  Julio hit 8 miles at 18 hours.  

As far as who experienced a greater elevation change...that was Kathy.  She started at ground level and climbed to 9 miles, while Julio started at 4 miles and climbed to 9 miles.

$18 was the price of the t-shirt

step-by-step explanation: