Josephine mixed Ambergris worth $5.50 per milligram with Byzantium worth $3.00 per milligram. How much of each did she use if her final 40 milligram mix
cost $4.00 per milligram?

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: