I need help understanding how to do these problems, 25 points for whoever can do it first

Which statement is true? the given sides and angles cannot be used to show similarity by either the sss or sas similarity theorems. the given sides and angles can be used to show similarity by the sss similarity theorem only. the given sides and angles can be used to show similarity by the sas similarity theorem only. the given sides and angles can be used to show similarity by both the sss and sas similarity theorems.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?