Perform the indicated operation. (9x2 - 4x2 + 2x + 3) + (-5x3 + 7x2 - 6x + 5)
A)
4x + 3x2 - 4x + 8
B)
14x? - 11x2 + 3x + 8
4x3 - 3x2 + 4x+8
D)
14x? - 11x2 - 6x + 2

4. jake needs to score in the top 10% in order to earn a physical fitness certificate. the class mean is 78 and the standard deviation is 5.5. what raw score does he need? z value for top 10% =1.282 how do i get the z value? what is the equation for this? raw score =mean+z*sd = 78+1.282*5.5 = 85.051