Shelby and shannon are both plumbers. shelby charges $15 per hour whilst shannon charges $2 per pipe fixed. shelby fixes 10 pipes per hour. a hotel wants to hire a plumber to fix 40 pipes. which plumber should the hotel hire?

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

The volume of a cone is 37x3 cubic units and its height is x units. which expression represents the radius of the cone's base, in units? 1 s o 3x o 6x obx 93x2

If a || b and e || f , what if the value of y ?