Exam

a) (-∞,5)

b) (5,∞)

c) (0,∞)

d) (-∞,∞)

a) [-4,∞)

b) [4,∞)

c) (-∞,-4]

d) (-∞,4]

a) (16/77,∞)

b) (-∞,-16/77)

c) (5,∞)

d) (-∞,3)

a) (-7/2,4)

b) (-∞,7/2)U(4,∞)

c) (7/2,4)

d) No solution

a) (3,7)

b) (-∞,2)

c) (-∞,0)

d) No solution

a) [16/3,∞)

b) (-∞,16/3]

c) (-3,16/3)

d) No solution

a) (-∞,1)U(7,∞)

b) (1,7)

c) (0,∞)

d) No solution

a) (-∞,1]U[4,∞)

b) [1,4]

c) 2

d) No solution

a) (-∞,1/2)U(3,∞)

b) (1/2,3)

c) 3

d) No solution

a)

b)

c)

d)