8 + 5i. I just added the expression normally.
To get the answer you have to add 29.4 and 13.9 and you get 43.3
It is A
Actually,
I think the question should be, "In what range(s) of x-values must
there be a root of the POLYNOMIAL?"
Unless you are working with some real strange maths, polynomials are
smooth and continuous. If you drew a smooth and continuous line through
the points in the graph, where would the line have to cross the x-axis?
The average rate of change is m=5.
Hope this helped.