Answer:
$12.5
Explanation:
The graph showing the relationship is attached.
To solve the problem, we have to first get the equation of the graph. From the graph, the points (60, 30) and (20, 10) lie on the graph. The equation of a line passing through two points is:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\ \\y-30=\frac{10-30}{20-60}(x-60)\\\\ y-30=\frac{-20}{-40}(x-60)\\ \\y-30=\frac{1}{2} (x-60)\\\\y=\frac{1}{2} x-30+30\\\\y=\frac{1}{2} x \\\\Therefore\ when \ the\ package\ weighs\ 25\ pound(x=25)\\\\y=\frac{1}{2}(25)\\ \\y=12.5\\\\y=\$12.5[/tex]
