Question

Solve −9≤4x−1<19 and write the solution in interval notation. If there is no solution, type ∅.

Answer 1

see explanation

Explanation:

Given

- 9 ≤ 4x - 1 < 19 ( add 1 to each of the 3 intervals )

- 8 ≤ 4x < 20 ( divide each interval by 4 )

- 2 ≤ x < 5

The solution in interval notation is

[ - 2, 5 )