Question

1. The water levels of the Tigris and Euphrates depends heavily on winter rains and

spring snowmelt in the nearby mountains.

The inches of rainfall in the lower end of the Tigris river can be represented with the
= 8x. Where x represents the number of years and y represents the total
equation y rainfall.

The Jordan River receives about 2 inches of rainfall per year.

a. Which river receives the most rainfall after 12 years? How much more does it
receive? Explain how you know.

Answer 1

After 12 years, the Tigris River receives 96 inches of rainfall, while the Jordan River receives 24 inches. Thus, the Tigris River receives 72 inches more rainfall than the Jordan River.

Step-by-step explanation:

To determine which river receives the most rainfall after 12 years, we need to calculate the total rainfall for each river.

The Tigris River's rainfall is given by the equation y = 8x, where x represents the number of years and y represents the total rainfall in inches. Plugging in 12 years, we have y = 8(12) = 96 inches of rainfall over 12 years.

For the Jordan River, with a steady rainfall of 2 inches per year, after 12 years it would have received a total of 2(12) = 24 inches of rainfall.

Therefore, the Tigris River receives more rainfall after 12 years. It receives 96 inches - 24 inches = 72 inches more rainfall than the Jordan River after 12 years.

Answer 2

After 12 years, the Tigris River receives 96 inches of rainfall, while the Jordan River receives 24 inches. The Tigris River receives 72 inches more rainfall than the Jordan River in that time.

Step-by-step explanation:

The rainfall for the Tigris river after a given number of years can be calculated using the equation y = 8x, where x represents the number of years and y represents the total rainfall in inches. To find out which river receives the most rainfall after 12 years, we need to use this equation.

For the Tigris river:

1. Let x = 12 years.
2. Calculate the rainfall using the given equation: y = 8x = 8(12) = 96 inches of rainfall after 12 years.

The Jordan River receives about 2 inches of rainfall per year, so after 12 years, it would receive 2 inches/year × 12 years= 24 inches of rainfall.

Therefore, the Tigris river receives more rainfall after 12 years. To find out how much more it receives compared to the Jordan River, we subtract the rainfall of the Jordan River from that of the Tigris:

96 inches (Tigris) - 24 inches (Jordan) = 72 inches

Thus, the Tigris river receives 72 inches more rainfall than the Jordan River after 12 years.