What expression is equivalent to 3(x-2)

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?