Endpoints of axes are ( +4,0) and (0, +5)

Ineed with number 6 , explain how to get 1978

For what value of (y) is 3^3/3^y =1/9

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f