Question

How do you solve `5 |x - 3| >=20`?

Answer 1

`x>=7 or x<= -1`. In interval notation, solution is `(-oo , -1] uu [7, +oo)`

Explanation:

`5|x-3|>=20 or |x-3|>=4 :. x-3>=4 or x>=7` OR
`5|x-3|>=20 or |x-3|>=4 :. x-3<= -4 or x<= -1`
In interval notation solution is `(-oo , -1] uu [7, +oo)`[Ans]