Select all equations that have one solution. 2 x + 2 x + 2 = 4 x + 2
–3(– x – 2) = 3( x – 2)
12( x) = x + 12
34(4 x – 8) = 18
x + x – ( x + x) = 2 x – 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?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"