For questions 12 and 13 tell whether the statement is always, sometimes, or never true. explain your reasoning.

12. a congruence transformation changes the size of a figure

13. if two figures are congruent, then there is a rigid motion or a composition of rigid motions that maps one figure onto the other.

The answer to your question is:

Step-by-step explanation:

12. A congruence transformation changes the size of a figure . Never

13. If two figures are congruent, then there is a rigid motion or a composition of rigid motions that maps one figure onto the other. Always

13. Always

12. Never

Step-by-step explanation:

13. Congruent means that they are the EXACT same shape and same size; by definition, this is always true.

12. Again, congruent means that they are the EXACT same shape and same size, so this is a false statement because what this statement is saying is that size is reduced in congruence, which is a big, fat lie.

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15 units use socratic

step-by-step explanation: 15 units

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)