The expression 3p2 represents the number of ways of:
a. choosing 2 items at a time from a set of 3.
c. arranging, in order, 2

Use set builder notation to represent the following set: { -3, -2, -1, 0}

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?

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.