I have a 99.17% in Math class. I did a test and got 50%. It’s worth 40% if my grade. How much will I have as a score in class now?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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 graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)