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7friends share 4 pizzas equally how much pizza did each friend get

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

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.