Which algebraic expression represents this word description? The product of seven and the difference between a number and ten
O A. 10-7x
O B. 7(10 - x)
O C. 7x-10
O D. 7(x - 10)

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.