The axis of symmety is the x value of the vertex
to find the x value of the vertex of ax^2+bx+c=0
x value=-b/2a
3x^2+bx+4=0
3/2=vertex
-b/2(3)=3/2
-b/6=3/2
times 6
-b=18/2
-b=9
times -1
b=-9
3.45 Divided by 0.89 = a little more than 3 pounds.
I believe Nancy bought 45 Angelfish and 315 Goldfish. 360 / 8 = 45, 360-45=315
