FIRST to answer and get it CORRECT will get brainliest, 13 points , and a thanks:) pls leave an explanation on how u got ur answer if possible :)

Yes he did it correctly

Step-by-step explanation:

The scale factor is the number you get after you divide the values of the corresponding sides of both shapesFor this example the 2 side is similar to the 5 side and the 3 side is similar to the 7.5 side. So we make ratios from the first figure to the second figureThat will 2 from the first to 5 five from the second so 2 : 5Then 3 from the first to 7.5 from the second so 3 : 7.5The scale factor must be same for every ratio, or else the transformation is incorrectCheck the ratios, does ? yes, so it is a correct transformation