

(provided that
)
Then

(just moving around a factor of
)

(multiply by
)
Answer: after 3 years, the old car will be better
after 13 years new car will be better
Step-by-step explanation:
9514 1404 393
Answer:
CPCTC
Step-by-step explanation:
The applicable reason for statement 4 is "Corresponding Parts of Congruent Triangles are Congruent (CPCTC)".
The reason shown in your problem statement is applicable only within one triangle. The segments of interest are in two different triangles.