Please help i give brainliest

minutes

Step-by-step explanation:

Let x be the time in the beginning (in minutes).

Given: The track team is trying to reduce their time for a relay race.

First they reduce their time by t^1=2.1 minutes.

Then they are able to reduce that time by t^2=1/10

If their final time is 3.96 minutes, then

X - t^1  - t^2 = 3.96

=> X = 3.96 + t^1 + t^2

=> X = 3.96 + 2.1 + 1/10

=>  X = 6.16