Help Let U= (q, r,s, t,u, v,w, x,y, z) A= (q, s,u, w,y) B= (q, s,y, z) C= (v, w,x, y,z) Question - B n(A-C)
A. (q, s,u, y)
B (q, s)
C. (q, r,s, t,u, v,w, x,y)
D. (q, s,u, y,z)

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.