A photocopier will only enlarge an image by 10% each time. Determine how many enlargements it will take for an image to be over twice its original size

8 enlargements

Step-by-step explanation:

Each time image gets enlarged by 10% or 1.1 times

1.1^x=2x log 1.1 = log 2x= log2 / log1.1 = 0.30/0.04 = 7.5 =  8 enlargements

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.