Question

Which graph shows the solution to the inequality -3x-7<20

Answer 1

-3x - 7 < 20
-3x < 20 + 7
-3x < 27
x > -27/3
x > - 9
open circle on -9, shaded to the right

Answer 2

The graph in the attached figure

Explanation:

we have

`-3x-7 <20`

solve for x

`-3x <20+7`

`-3x <27` -----> Multiply by
`-1`

`3x>-27`

`x>-9`

The solution is the interval--------> (-9, ∞)

All real numbers greater than
`-9` ( the number
`-9` is not included)

The graph in the attached figure