NEED HELP ASAP!! WILL GIVE BRAINLIST IF CORRECT

find the surface area of a regular hexagonal pyramid with a base edge of 16 m with a and a slant height of 15 m

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

Ineed in figuring out this problem.

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)