Answer:

Step-by-step explanation:
The satellite has 30 modular units.
There are equal numbers of non-upgraded sensors in each unit.
Let us assume that on the entire satellite there are x numbers of upgraded sensors.
Then as per the given condition, there are
number of non-upgraded sensors in one unit.
Therefore, the number of non-upgraded sensors on the entire satellite is
=6x
Hence, total number of sensors in the satellite is (x+ 6x) =7x
Therefore, the required fraction of the upgraded sensors is
. (Answer)
In interval <a, b> the average rate of change the function you count from this formula:

Here you've got a=-1 and b=1:
Step-by-step explanation:
See above graph.......
Set both equal to zero; x+2=0 so x=-2; x-1=0 so x=1; the solution is x=-2, 1.