Pre-image abcd is dilated to be image a′b′c′d′ . the origin is the center of dilation. what scale factor is used to create the dilation?

The scale factor is what u multiply the original image by to find the new image.

Now look at original image ADit equals 3 unitsnow look at new image A'D'it equals 6 unitsso what do u have to multiply 3 by to equal 6 ? That would be 2because 2 * 3 = 6. Therefore, ur scale factor is 2.

u can try that on all ur points...and u will find that when multiplying the original image by 2, u get the new image.

answer : scale factor of 2

Your cleary not see the answer is 25