anita shower is losing 20% of her hair each year. if she currently has 1546 hairs on her head, about how many hairs will she have left after 10 years?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

41/17 as a decimal rounded to the nearest hundredth

Solve for n? [tex]z = \frac{3}{4} mn[/tex]