When marla rounded 19.95 to the nearest tenth shi found the number changed to 20 is this correct explain

Yes this is correct..the rule is: to round up if the number is over 50, round down if the answer is below fifty, like 44...

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.