Answer:
p(x) = (5x - 1) (x + 4) (x - 2)
The equation of the line in slope-intercept from would be y=3x-3.
3x is the slope also known as the rise over run.
-3 is the y-intercept, where the line cross the y-axis on the graph.
The mixed number is 3 75/100, but you can reduce that to 3 3/4.3 as an integer.
As, F is inversely proportional to square of distance between them
a) When it will be doubled the force will reduce 4 times
ie. 10/4 =2.5
b) i) F= k*1/d²
ii) k=3² *2= 18
Therefore F= 18/5² =18/25 =0.72