Question

Between the time Iko woke up and lunchtime, the temperature rose by 11 degrees. Then by the time he went to bed, the temperature dropped by 14 degrees.

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

Answer 1

`T_t=x\textdegree-3\textdegree`

Explanation:

let x° be temperature when he woke up. Given that the temperature rose by 11° then later dropped by 14°. Also let
`T_t` be temperature at time t The temperature relative to time of waking up can be expressed as:

`T_t=x\textdegree \pm \bigtriangleup T\textdegree\\\\T_t=x\textdegree + 11\textdegree -14\textdegree\\\\T_t=x\textdegree-3\textdegree`

Hence, temperature relative to time of waking up is expressed as

`T_t=x\textdegree-3\textdegree`