Question

Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, l, after d days. In how many days will the water level be 26 feet,

Answer 1

34-0.5d=l

34-0.5d=26
34-26=0.5d
8=0.5d
8/0.5=d
16=d
16days