Question

The life zones on Mount Rainier, a mountain in Washington, can be approximately classified by elevation, as follows.

Low-elevation forest: above 1700 feet to 2500 feet
Mid-elevation forest: above 2500 feet to 4000 feet
Subalpine: above 4000 feet to 6500 feet
Alpine: above 6500 feet to the summit
Write a compound inequality that represents the elevation range h
for each type of plant life.

a. trees in the low-elevation forest zone:

h > 1700 feet and h < 2500 feet
h ≥ 1700 feet and h < 2500 feet
h > 1700 feet and h ≤ 2500 feet
h ≥ 1700 feet and h ≤ 2500 feet

b. flowers in the subalpine and alpine zones:

h > 4000 feet and h ≤ 6500 feet
h ≥ 4000 feet and h < 6500 feet
h ≥ 4000 feet and h ≤ 6500 feet
h > 4000 feet and h < 6500 feet

Answer 1

Compound inequalities can be used to describe the elevation ranges for different life zones on Mount Rainier. For trees in the low-elevation zone, the range is 1700 feet ≤ h ≤ 2500 feet. For flowers in the subalpine and alpine zones, the range is 4000 feet < h ≤ 6500 feet. The correct options are a ,b .

Step-by-step explanation:

The life zones on Mount Rainier can be described using compound inequalities that represent the elevation range ‘h’ for each type of plant life.

• For trees in the low-elevation forest zone, the elevation range can be represented by the compound inequality: 1700 feet ≤ h ≤ 2500 feet.
• For flowers in the subalpine and alpine zones, the compound inequality that represents their elevation range is: 4000 feet < h ≤ 6500 feet.

It's important to note that these inequalities capture distinct ecological zones based on elevation and include the lower boundary with an ≥ (greater than or equal to) symbol to reflect that the plant life can occur beginning at this precise elevation.

Meanwhile, the expression ≤ (less than or equal to) indicates that the plant life can be found up to and including the elevation stated. The correct options are a ,b .