Which expression is a PRODUCT?
A) 8(6 + 3)
B) 8(6 + 3)
C) 5(2) + 2(6 x 3)
D) 5(2 + 3) - 4(8 + 1)

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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.

Two numbers have a sum of -19. one number is x. what expression represents the other number?