A hot air balloon begins its descent at a rate of 22 1/2 feet per minute. How long will it take for the balloons elevation to change by -315?

Respuesta :

To find this we can divide 315 ÷ 22.5 = 14. 
It will take 14 minutes for the balloon to descend 315 feet. 
hope this helps!
14 minutes because 22.5 multiplied by 4 =315