(a) Show that the two functions Y1(t) = ( 0 et ) and Y2 (t) = ( e2t e2t ) are solutions (b) Solve the initial-value problem dY dt = ( 2 0 1 1 ) Y, Y(0) = ( −2 −1 ) . g

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.

The correct answer is d, hope this