Which equation represents the graphed function a. y=4x-2 b. y=-4x-2 c. y=1/5x-2 d. y=-1/4x-2

Which is an equation for the nth terms of the sequence 12,15,18,21

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?  

Ammonia molecules have three hydrogen atoms and one nitrogen atom. how many of each atom arein five molecules of ammonia