Which are the center and radius of the circle with equation (x + 5)2 + (y - 4)2 = 9?
Answers
Answer:
Center (-5,4) radius 3
Step-by-step explanation:
The standard equation of a circle is
(x-h)^2+(y-k)^2=r^2
where the center is (h,k) and r is the radius
so h=-5 in this case and k is 4
r^2=9 so r=3
Melissa will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $61.96 and costs an additional $0.10 per mile driven. The second plan has an initial fee of $51.96 and costs an additional $0.14 per mile driven. How many miles would Melissa need to drive for the two plans to cost the same?