What's the rate of one

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g