Write the equation of the circle with center (2, -3) and a radius of 4.
a) (x + 2)^2 + (y - 3)^2 = 4
b) (x - 2)^2 + (y + 3)^2 = 4
c) (x + 2)^2 + (y - 3)^2 = 16
d) (x - 2)^2 + (y + 3)^2 = 16

C(h,k) radius(r)
C(2,-3) r=4

(x-h)^2 + (y-k)^2 = r^2
(x-2)^2 + (y--3)^2 = 4^2
(x-2)^2 + (y+3)^2 = 16

therefore, the answer is D

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.