Question

Suppose that the water level of a river is 50 feet and that it is receding at a rate of 0.75 foot

per day. Write an equation for the water level,, after days. In how many days will the water
level be 30 feet?

Answer 1

Y=-0.75x+50

Now put in 30 for y:
30=-0.75x+50
-20=-0.75x
X=26.6666
So in 26/27 days