Step-by-step explanation:

Answer:
The ratio is 10 : 1, or 10 to 1
Step-by-step explanation:
-5(r-1)
Do you need step by step
Answer:
8.5
Step-by-step explanation:
Answer:
It's C
Step-by-step explanation:
Your graph should be this one, with both lines solid because, the X line, or red, has to be at least -1 or higher, and the Y line, or the blue, has to be +4 or higher