Question

the water temperature at the beach started at 82 degrees and it is rising 0.6 degrees each hour. if the water temperature is now 85 degrees write and solve an equation to find h, the number of hours that have passed

Answer 1

You can multiply 82 and 0.6 and subtracting with 85

Answer 2

Answer:

5 hours

Step-by-step explanation:

Given: the water temperature at the beach started at 82 degrees and it is rising 0.6 degrees each hour

To Find: If the water temperature is now 85 degrees write and solve an equation to find h, the number of hours that have passed

Solution:

Current water temperature at beach $=82^{\circ}$

temperature rising rate degrees per hour $=0.6^{\circ}$

let $\text{h}$ be the hours passed.

water temperature at the beach after hour $\text{h}$ be

                                                                       $= 82+0.6\text{h}$

Therefore,

equation for water temperature after $\text{h}$ $\text{hour}$ is

                    $= 82+0.6\text{h}$

When water temperature is $85^{\circ}$

                    $85=82+0.6\text{h}$

                    $0.6\text{h}=85-82$

                    $0.6\text{h}=3$

                    $\text{h}=\frac{3}{0.6}$

                    $\text{h}=5$ $\text{hours}$

therefore it will take  $5$ $\text{hours}$ to reach temperature $85^{\circ}$