What’s the missing length? Or what is the hypotenuse?

Which statement about the graph of y = 8(0.25)^2

Mon wants to make 5 lbs of the sugar syrup. how much water and how much sugar does he need… …to make 5% syrup?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64