Answer:
See attached file
Step-by-step explanation:
If x (0,4) is the focus of the parabola then the vertice is the point v(0,2) and the directrix is the x axis
For the first markdown, you would multiply 550 by 0.20. For the second, you would multiply what you got for the first one by 0.10.
mmm
Answer: 280.8
linear