When two or more points on a graph has a linear association it means that the slope of the graph at thos points are equal.
Mrs.Brown will receive $19.80 back.
This would be 14137.17.
V=4/3 x π x r^3 = 4/3 x π x 15^3 ≈ 14137.16694
Check the picture below.
so, we have two points this line passes through, well, more than two points really, but let us use these two points to get its slope.
keeping in mind that the the constant of proportionality is simply the slope.
2, 12, 13, 0
hope this helps home dawg slice homie