Determine whether the sequence is arithmetic or geometric.

sequence 1: 32, 16, 0, –16,
sequence 2: 32, 16, 8, 4,

Sequence 1: 32, 16, 0, –16, ...
We notice that 16-32 = -16 & 0-16 = -16 & -16 -(0) = -16
Hence since the common difference is d= - 16, then it's an arithmetic progression

Sequence 2: 32, 16, 8, 4, ...
We notice that  16/32 = 1/2 & 8/16 = 1/2 & 4/8 = 1/2
Hence since the common difference is r= 1/2, then it's a geometric progression

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.