Does someone want to help me solve this problem

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2