What mistake was made and what can i do in the future to avoid making the same mistake? Marking brainlist

please help

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

Percent increase and decrease. original number: 45 new number: 18

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?