Find two consecutive even numbers such that the sum of the larger and twice the smaller is 62

Which equation matches the graph shown ?

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

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?