Please solve for n owo

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Atransformation t : (x, y) (x-5,y +3) the image of a(2,-1) is

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.