Answer:
There is a horizontal shift.
Step-by-step explanation:
Replacing x in a function formula with x - 8 moves the graph 8 units to the <u>right</u>.
In the attached image, y = sin(x) is light green, y = sin(x - 8) is dark green, and the arrows show how points on sin(x) get moved 8 units to the right.
Last one because it says (6-4)-log:40
I assume the question is to calculate how much work is left to complete.
we know that
the 100% of the work is equal to 1
so
To find how much work is left to complete

therefore
the work completed is equal to 
the pending work to be completed is 
the total work is equal to 