Solve this expression. 2.2-0.5(0.6x-1.8)

Plz i want answer and i would appreciate it is is a b c or d

Solve for p: 21 , = 3/4 pit's fraction problem

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