Tyra is laying down square carpet pieces in her photography studio. each square carpet piece is 1 yard by 1 yard. if tyra's photography studio is 7 yards long and 4 yards wide, how many pieces of square carpet will tyra need?

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a 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.

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount