a the domain of the function b its range c express the domai

(a) the domain of the function:

(b) its range:

(c) express the domain and range in interval notation:

Solution

There are no denominators (so no division-by-zero problems) and no radicals (so no square-root-of-a-negative problems). There are no problems with a polynomial. There are no values that I can\'t plug in for x. When I have a polynomial, the answer is always that the domain is \"allx\".

The range will vary from polynomial to polynomial, and they probably won\'t even ask, but when they do, I look at the picture:

The graph goes only as low as y = 4, Then:

The range is \"all y < -4\".