Answer:

Step-by-step explanation:
We translate the phrase into an equation:

Then we simplify:

Answer:
HJ is 8
JE is 4
Step-by-step explanation:
Nice song in the other tab by the way:)
Answer:
; minimum
Step-by-step explanation:
Given:
The function is, 
The given function represent a parabola and can be expressed in vertex form as:

The vertex form of a parabola is
, where,
is the vertex.
So, the vertex is
.
In order to graph the given parabola, we find some points on it.
Let 




So, the points are
.
Mark these points on the graph and join them using a smooth curve.
The graph is shown below.
From the graph, we conclude that at the vertex
, it is minimum.