Find by what value of a the two lines ax+2y-3=0 and (2a+1)x+y-1=0 they are parallel

Will mark brainliest question in the pic.

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation