We get the same result if we multiply a number by 4 or if we multiply the number by 7 and then add 9

No we don’t say you multiply 4 and 6 you get 24 then add 9 you get 33 and then say you multiply 7 and 3 which is 21 then you add 9 you get 30 so you wouldn’t get the same results

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.