Karin observed that the water level in the part of the river she observed fell 1.6 millimeters per year for 1.5 years. Use the distributive property to calculate the exact variation in water level for the time period.

_______millimeters

To calculate the exact variation in water level for the time period, we can use the formula:

Variation = Rate of change × Time

Given that the rate of change is -1.6 millimeters per year and the time is 1.5 years, we can substitute these values into the formula:

Variation = (-1.6 millimeters/year) × (1.5 years)
= -2.4 millimeters

Therefore, the exact variation in water level for the time period is -2.4 millimeters.