The function is
.
Find how many miles,when the height of the curve reaches
.
The height is
.
Since
.
.
Substitute
in
.


.
inches need when the height of the curve reaches
.
Since
.
inches are equal to
.
.
need to right of the origin for the height of the curve reaches
.
Graph:
\Graph the function
.

Observe the graph:
\
need to right of the origin for the height of the curve reaches
.
need to right of the origin for the height of the curve reaches
.