HELP ME PLZ
Simplify this expression:
4.2v - 5 - 6.5v

Use the distributive law to multiply. 3(4x + 5y + 6)

Ihave trouble finding the nth term of a linear sequence

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