Suppose that the water level of a river is 340 meters and that it is receding at a rate of 0.5 meters per day. Write and equation for the water level, L, after d days. In how many days will the water level be 260m?
Suppose that the water level of a river is 340 meters and that it is receding at a rate of 0.5 meters per day. Write and equation for the water level, L, after d days. In how many days will the water level be 260m?
The equation for the water level, L, after d days can be written as:
L = 340 - 0.5d
To find in how many days the water level will be 260m, we can substitute L = 260 into the equation and solve for d:
260 = 340 - 0.5d
0.5d = 340 - 260
0.5d = 80
d = 80 / 0.5
d = 160
Therefore, the water level will be 260m after 160 days.
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