Alicia cashed her paycheck and used half her earnings to take three friends to dinner. she spent $42.15 on dinner and she brought home more than $20. write an inequality to represent the situation , using x to represent the amount of alicia's paycheck.

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

What could explain what happened when the time was equal to 120 minutes

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