the area of a rectangle with a perimeter of 20 units is given by f(w)=10w-w squared, where w is the width of the rectangle. Assume that w is a whole number. Make a table of values and a graph of the function.

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.