x < - 
add
to both sides
- 3x >
+ 
- 3x >
( divide both sides by - 3 )
note that when we divide/ multiply by a negative quantity we must reverse the inequality symbol
x < - 
Answer:
Is there a graph to see how it looks.
Answer:

Step-by-step explanation:
Proportion:


substitute x = 15:

Answer:
ax^2 + bx + c
Step-by-step explanation:
im pretty sure this answers your question