Grams to what?
milligrams to what?
Solution
(a) setting f(x) = 0

(b)
when x = 0
y = f(0) = -108
Hence, the height is 108
(c)
Maximum = (1.5, 15.188)
(d)
Minimum (-1.702, -300) and (4.702, -300)
(e) From the graph, the interval of increasing is

(f) From the graph, the interval of decreasing is;

g)
Since the equation doesn’t have a constant term following the slope then it goes through the origin (0,0)
so start from the origin and go down 2.5 and over to the right 1 and keep repeating that pattern
then to make the left end of the line, go 2.5 up and 1 left
this will result in a line going downwards at a slope of 2.5 (aka making a y = -2.5x line)