Which equation is right​

What value of x will make the triangles similar by the sss similarity theorem?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?