pls explain why no pls and thank u

Answer:
Step-by-step explanation:
So we have : c + 2.5 < 4.3
And it's asking whether c = 1.8 is a solution.
Substitue c = 1.8 in, we get :
1.8 + 2.5 < 4.3
4.3 < 4.3 (not true)
So, c = 1.8 is NOT a solution.
Answer:
No, because c = 1.8 would be wrong and the real answer would be c < 1.8
Step-by-step explanation: