exam Maths Puzzle Numerical Ability

Could you please help me with this problem on hyperbolas:

Find the vertices, foci, and asymptotes. Then draw a graph.

9y^2-25x^2=225

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exam Other Question

Please help me solve this equation: 1-2/3y=9/5-y/5+3/5 One day the bookstore sold 30 sweatshirts. White ones cost $10 and yellow ones cost $12. In all, $344 worth or sweatshirts were sold. How many of each color were sold? (can you help me set up the equation to solve this problem?)