Answer:
not a function
Step-by-step explanation:
We can use the vertical line test to tell if this is a function
If a vertical line touches the graph at more than one point it is not a function
Since this graph is a vertical line, it will fail the vertical line test.
Therefore, this is not a function
Answer:
16π
Step-by-step explanation:
Area = πr²
r - radius
r = d/2 = 8/2 =4
Area = 4²π = 16π
Just replace 'x' in c(x) by d(x)
(cod) (x) = 4(x^2+5x) - 2 = 4x^2 +20x - 2
Thats it!
I think it is yes because it is a prediction.
