A sandwich shop has weekly fixed costs of $2480 and variable costs of $1.90 per sandwich. Its demand function, the relationship between the selling price, p, of a sandwich, and the number of sandwiches it can sell per week (x), is given by:

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.