Question

Ericka is also in Mr. Whittaker’s science class and she recorded the variation in water level at a different part of the river. She observed that the water level there fell 2.2 millimeters per year over a period of 6.2 years
This data is compared to the average annual trend, which shows the water level rising to 1.8 mm/year.

Which of the decimals in the problem should be represented as a negative rate?
1.88 mm/year
2.2 mm
2.2 mm/year
6.2 mm/year


Which two factors should Ericka multiply to find the total variation in the water level?
2.2 mm and 6.2 years
1.8 mm/year and 2.2 mm/year
1.8 years and -2.2 mm/year
6.2 years and -2.2 mm/year

Answer 1

@darkknight, ill get to u soon