To find the total cost multiply $12 x 180 square feet
Add a 9 to the data set and the median and mode will both be 9
https://www.mathpapa.com/algebra-calculator.html?q=3x-4y%3D12
Answer:
Line BD is Congruent to Line BD due to the Reflexive property. Angle Bad is congruent to angle BCD because of the third angle theorem therefore triangle ABD is congruent to triangle CBD because all angles and sides are congruent
I don't know if that will satisfy your teacher because some prefer different things but that leaves no ground to be inferred and explains everything word for word.