Well, if it descends 9 meters every minute, you would multiply 9 by the number of minutes in question. Since you want to know its location after 5 minutes, you would multiply 9 by 5.
9 x 5 = 45 so 45 meters after 5 minutes
Hope this helps :)
Answer: 24.8
Explanation: If Henry is halving a number, that means he's dividing it by 2, getting two halves. You would get the original number by undoing that division, or multiplying the product by 2.
2 x 12.4 = 24.8
The answer would be n = 1