If hugo goes out for dinner and pays 2$ of sales tax on a 20$ meal what percentage is the sales tax in his city?

How do i get my dad to stop making me gargle his pickle i want my mom to gargle my pickle not my dads

Ineed to know the answer right now! !

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