So step one is to distribute the 4x through and the -5 through. After distributing you get 8x^{2}+28x-15x+10. Combine the like terms, 28x and -15x, to get 13x. Your answer is 8x^{2}+13x+10
A dilation is a transformation that changes the size of a figure. The original figure and translated figure seem to be (similar) I'm not sure about this I just researched it. Sorry:)))
x 100 = 150%