Question

juanita is testing her new model airplane. she starts its descent at an elevation of 2,500 feet. it descends at a constant rate of 500 feet per minute. complete the table to show the plane’s elevation after it started to descend. solve on paper, then enter your answer on zearn. time since plane started descent (min) elevation (ft) 0 2,500 1 2 3 4

Explanation:

Step1: Understand the formula

The elevation \( E \) after \( t \) minutes is given by the formula \( E = 2500 - 500t \), since it starts at 2500 feet and descends 500 feet per minute.

Step2: Calculate for t = 1

Substitute \( t = 1 \) into the formula: \( E = 2500 - 500(1) = 2500 - 500 = 2000 \) feet.

Step3: Calculate for t = 2

Substitute \( t = 2 \) into the formula: \( E = 2500 - 500(2) = 2500 - 1000 = 1500 \) feet.

Step4: Calculate for t = 3

Substitute \( t = 3 \) into the formula: \( E = 2500 - 500(3) = 2500 - 1500 = 1000 \) feet.

Step5: Calculate for t = 4

Substitute \( t = 4 \) into the formula: \( E = 2500 - 500(4) = 2500 - 2000 = 500 \) feet.

Answer:

For \( t = 1 \): 2000
For \( t = 2 \): 1500
For \( t = 3 \): 1000
For \( t = 4 \): 500