Question

Solve the compound inequality 9 + 3n 3 or 5n < 30.

Answer 1

Are you missing an = > or < in the first part?

Answer 2

So we can arrange things around, since we are not dividing or multiplying by any negative numbers the inequality sign will not flip around. So...

9 + 3n >= 3 or 5n < 30
Looking at 5n < 30 we can simply divide by 5, so
n <30
Next 9 + 3n >= 3
we can start by subtracting 9 to get 3n >= -6
then divide by 3 to get n >=-2

Answer 3

sorry that first part should be n<6 NOT n<30