Question

-3t +9 _> -21 Please help me solve this!


Thanks, you’re a lifesaver!

Answer 1

Answer is t_<10


-3t+9_>-21

-3t_>-30

t_<10

**when you divide or multiply both sides by a negative you have to flip the sign**

you can substitute numbers to make sure your answer is correct. For example if u substitute t=9 -27+9_>-21 -18_>-21 which is correct.(but you’ll see it’ll be incorrect if u put t=11)