The total amount that your friend spent is the sum of the cost for 3 bags of wild bird seed and the bird feeder. By letting x be the cost of each bag of wild bird seed, the total cost for purchasing 3 bags of this is 3x. The equation that may be used to determine x is letter "B. 3x + 18 = 45". Each bag costs $9.
The axis of symetry, or A.o.S, intersects a parabola at its vertex. The answer is x=1
So it would equal to 8/10 and divide by 2 which you would get 4/5
Your anbswer is gonna be 5,7