Unit 7 test polygons & quadrilaterals. Please Help!

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

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 (monthly car loan payment per $1,000 borrowed) i need !

15/16 as a decimal rounded to the nearest hundredth