Question

Between the time lko woke up and lunchtime,the temperature rose by 11 degrees then by the time he went to bed the temperature dropped by 14 degrees

Answer 1

Missing details:

Write an addition expression for the temperature relative to when Iko woke up.

Answer:

`T = x -3`

Explanation:

Let the temperature when he woke up be x

When he woke up, it rises to 11 degrees.

This is represented as:

`t_1 = 11`

At bedtime, it dropped by 14 degrees.

This gives

`\triangle t = 11 - 14`

`\triangle t = -3`

The relative change T is:

`T =Initial\ Temp + Change`

`T = x + \triangle t`

`T = x -3`