Answer :
Final answer:
Brett's altitude is decreasing by 15 meters per second. After a minute (60 seconds), he would have descended 900 meters down the mountain. Hence, the correct option is B) -900 meters.
Explanation:
The subject of this question revolves around the concept of rate of change and how it applies to Brett's skiing journey. Brett's altitude is changing at a rate of -15 meters per second. This means he is descending, or losing altitude, at this rate per second. To find out how much altitude he loses after one minute, we need to understand how many seconds are in a minute, which is 60. So, we multiply the rate of -15 meters per second by 60 seconds to get the total altitude change after a minute.The student is asking about Brett's total change in altitude after one minute while skiing down a mountain. Given that his altitude changes by -15 meters per second, we can calculate how much it will change in one minute. There are 60 seconds in a minute, so we can multiply the rate of change by 60 to find the total change in altitude.
In this case, -15 meters per second multiplied by 60 seconds equals -900 meters. Therefore, Brett's total change in altitude after one minute will be -900 meters.
When carrying out this multiplication, -15 * 60, we get a result of -900. This means that after one minute, Brett will have descended 900 meters. This matches option B) in your multiple choice answers. It's important to remember here that the negative sign indicates a drop in altitude (he is moving down the mountain), not a mathematical error.
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