I guess this should be easy if your smart but I’m not lol help

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

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

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?