Answer:
49038.0952
Step-by-step explanation:
x+0.05x=51490
1.05x/1.05= 51490/1.05
x=49038.0952
The vertex is (-1, 2).
The equation of parabola:
where (h, k) is the vertex
We have h = -1 and k = 2.
Substitute:

I think the answer is 180 since 360/2=180
If they don't stop 1 hour and a half.
90 miles away from Becky and 120 away from Don