What is the common difference for this arithmetic sequence? 45,39,33,27,21,...

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

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

Acircle has a circumference of 28.36 units what is the diameter of the circle