Pls I need help for the rest

6(2x+y)+2(x+4y) how can i solve this

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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