Answer
Explanation
The rate of each balloon's rise is given as
[tex]\text{Rate of balloon's rise = }\frac{Change\text{ in distance}}{Corresponding\text{ change in time}}[/tex]For Balloon A
A graph is provided, so, the rate would be the slope of this straight line graph.
For a straight line, the slope of the line can be obtained when the coordinates of two points on the line are known. If the coordinates are (x₁, y₁) and (x₂, y₂), the slope is given as
[tex]Slope=m=\frac{Change\text{ in y}}{Change\text{ in x}}=\frac{y_2-y_1}{x_2-x_1}[/tex]For this one, we can pick two points on the graph
(x₁, y₁) and (x₂, y₂) are (4, 2400) and (2, 1200)
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