Write an exponential function in the form y=ab^xy=ab x that goes through points (0, 20)(0,20) and (8, 5120)(8,5120)

First one is 1 second one is 3

The third and fourth box.

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.