Afarmer grew x pounds of rice last year. this year, she grew 8% more rice than she grew last year. which expression represents the amount of the number of pound of rice the farmer grew this year.

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.