(1 point) Let f(x) = x and g(x) = 16 - x. Find f + 9, f - 9, f 9, f and 9 g, , and their respective domains. 1. f + 9 = sqrt(1-x)+sqrt(4+x)(4+x) 2. What is the domain of f + g? Answer (in interval notation): [-4,1] - 3. f g = 4. What is the domain of f - g? Answer (in interval notation): [-4,1] 5. f.g= 6. What is the domain of fg? Answer (in interval notation): 7. [-4,1] f = g 8. What is the domain of g Answer (in interval notation): 1 11 ?