Answer:

Step-by-step explanation:
The vertex form of an absolute function is
.... (1)
where, (h,k) is vertex.
The given function is

The vertex of the function is (-2,0).
It is given that graph of f(x) is translated 4 units to the right. So, the vertex of the function after translation is (2,0).
Substitute h=2 and k=0 in function (1).


Therefore, the required function is
.
V = pi*r^2*h
V = 490
h = 10
490 = pi*r^2*10
r = 3.95
This problem is easy the correct choice for it will be B.
Change the first to a decimal
15 2/5 = 15 4/10 = 15.4 miles
15.4 miles
------------
2.1 hours
7.33333333(repeating) miles/hour
7 1/3 miles per hour