Worker A could paint a whole room in 2 hours. Worker B could paint a whole room in 3 hours. How many parts of the room could both of them paint in 1 hour if worker A and worker B worked together.

Which of the following is true for the relation f(x)=2x^2+1

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?