Please Help me PLEASE i give extra points

Somone me i want to know what 18 hours out of 24 hours in a fraction

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work: