If the length for sides 1, 2, and 3 of a quadrilateral add up to 12y^2+9y-21 and the perimeter of the quadrilateral is 4y^3+18y+16y-26, what is the length of the fourth side of the quadrilateral.

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x

How many and of which kind of roots does the equation f(x)=x3−x2−x+1