Find the values of the constants C and b so that the curve y = Cb^(x) contains the points (4 , 3) and (5 , 6) .

for the point (4,3) we can write 
for the point (5,6) we can write 

then taking the quotient of these two equations leads to


s we see that



Now we can use either point (we'll go with (4,3)) and b directly to write





so,