Answer:
i) D:
ii) R:
iii)
Explanation:
i) The given function is
The function is defined for all real values of x.
The domain is all real numbers.
ii) The range is all values of y that makes x defined.
The given function is
This function has vertex
and it is reflected in the x-axis.
This means that, the vertex is the maximum point and the maximum y-value is 5.
The range is
or
iii) To find the y-intercept. we subsitute
into the function.
The y-intercept is (0,4.33) or b=4.33
See attachment for graph