Please help i have no idea how to do this given a polynomial and one of its factors find the remaining factors of the polynomial (5x^3-17x^2+6x);(x-3)

Write a corresponding real world problem to represent 2x - 125=400

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.

A. 530 ft^2 b. 500 ft^2 c. 470 ft^2 d. 450 ft^2