I solved the first 2 but can anybody finish it, please?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Sandy is ordering bread rolls for her party, she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.