Which is the smallest standard deviation?

Which of these triangle pairs can be mapped to each other using two reflections?

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.