Which expression is equivalent to 1/3 (6-3x)+9x

For how answer my question this will be the last question can you answer in math subject

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Complete the input-output table for the linear function y = 3x. complete the input-output table for the linear function y = 3x. a = b = c =