Help pls thank you very much I picked one but I have no idea which one

42

Step-by-step explanation:

we could use inverse operation and multiply 7 by 6

47 - 90 = 43

43 - 180 = x

x = 137

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.