Melissa holds two jobs. in job a she earns $14 per hour, and in job b she earns $12.50 per hour. one week michelle worked a total of 45 hours and earned $600. how many hours did she work in each job that week. show your equation and work that you used to solve the equation.

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