Can someone please help me???

Solve for x i'll try to attach the files bc it's not letting me for some reason

Write the equation in logarithmic form e^x=403.429

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.