Suppose that the water level of a river is 32 feet and that it is receding at a rate of 4 feet per day. Write an equation for the water level, y. after x days. In how many days will the water level be 16 feet?

Select the correct equation and solution (You should pick two answers).

A) y = 4.0 + 32
B) y= -4x +32
C) 4 days
D) 8 days