Help Please again ;-;

Find the solutions for a triangle with a =16, c =12, and b = 63º

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.

What is the slope of the line passing through the points (-5, 7) and (-3,5)?