If this is what u are asking for 240 is what i got for the answer
Answer:The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.
Step-by-step explanation:
X shortest piece
X+6 middle piece
X+8 longest piece
Add them
3x+14=56
3x=42
X=42/3=14
Length of AC is 5 I hope this helps I can’t think right right now so bare with me