120 cm=120 cm*(10 mm/1cm)=1200 mm,
Ratio: 1200 mm / 80 mm=15/1
Answer:
C. 15 to 1
Answer:
Reason 3. Congruence of segments is reflexive
Reason 4. SSS
You have:

Find

This gives you the rule how to find next terms:
1.

2.

3.

Answer: next 3 terms are 383.5, 1153 and 3461.5.
Twice. 64/32 is 2.
hope this helps