exam Maths Puzzle Numerical Ability

There are 400 seats in the theatre. Organizers want to make a profit of $2750 from ticket sales. Non students will pay $8, students $5. How many of each type of ticket will have to

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dolores uncle is 52 years of age. his age is seven years more then triple dolores age. how old is dolores? I cant find a good example of how to graph a porabola in x-itercept and y-intercept form. Can you explain these to things better to me in note form pleas. It would really help me out in my math class. Thank you.