Question

Mr. Brown is going to start sleeping an extra 30 minutes each night. If d represents the number of days, which of the following expressions shows how many more hours of sleep Mr. Brown will get in a week?
​

Answer 1

The additional hours of sleep is an illustration of rates.

The expression that represents the additional hours is d/2

The number of days is given as:

$\mathbf{Days = d}$

The rate of sleep per day is given as:

$\mathbf{Rate =30}$

So, the required expression is:

$\mathbf{Expression = Days \times Rate}$

This gives

$\mathbf{Expression = d \times 30}$

$\mathbf{Expression = 30d}$

Divide by 60, to represent it as hours

$\mathbf{Expression = \frac{30d}{60}}$

$\mathbf{Expression = \frac{d}{2}}$

Hence, the expression that represents the additional hours is d/2

Read more about rates at:

brainly.com/question/18576224