Question

Which of the following is the solution set for the conjunction 7 < 4x + 1 < 5?
(Points : 4)
x <2 or x > 1

x > 2 and x < 1

x > or x <

x > and x < Which of the following is the solution set for the conjunction 7 < 4x + 1 < 5?
(Points : 4)
x <2 or x > 1

x > 2 and x < 1

x > or x <

x > and x < @Mathematics

Answer 1

7 < 4x + 1 < 5


7 < 4x + 1 and 4x + 1 < 5


7-1 < 4x and 4x < 5 - 1


6 < 4x and 4x < 4


6/4 < x and x < 4/4


3/2 < x and x < 1


x > 3/2 and x < 1

Answer 2

but there's a problem: x cannot be both greater than 3/2 and less than 1


So there are no solutions