Explain the difference between adding and subtracting polynomial expressions and adding and subtracting fractions.

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.

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

At a cost of 200, your club bought 175 frisbees to sell at the pep rally. you plan on selling them for $5 each. what is the domain of the function?