Answer: x is greater than or equal to -1
Step-by-step explanation: 1. Add 6 to both sides---- 3x ≥ 24x+21
2. Subtract 24x to both sides.-- -21x≥21
3. x≥-1
4. If you have a symbol that is "greater than or equal too, you put a shaded dot on where you want to plot the number (-1), than you draw an arrow pointing to the right because it's greater than