Chapter 1.3, Problem 44E

a.

To determine

To calculate : the value of the expression for the number of calories in a whole cup of milk.

Answer to Problem 44E

The value of the expression, for the number of calories in a whole cup of milk.

  $\left(11\times 4\right)+\left(8\times 4\right)+\left(8\times 9\right)=148\text{ calories}$

Explanation of Solution

Given information :

Consider, the expression for the number of calories in a whole cup of milk.

$\left(11\times 4\right)+\left(8\times 4\right)+\left(8\times 9\right)$

$$

Calculation :

The value of the expression, for the number of calories in a whole cup of milk.

$\begin{array}{l}\left(11\times 4\right)+\left(8\times 4\right)+\left(8\times 9\right)\\ \left(11\times 4\right)+\left(8\times 4\right)+\left(8\times 9\right)=\left(44\right)+\left(32\right)+\left(72\right)\left[\text{multiply within parentheses}\right]\\ \left(11\times 4\right)+\left(8\times 4\right)+\left(8\times 9\right)=148\left[\text{add}\right]\end{array}$

Therefore,

The value of the expression for the number of calories in a whole cup of milk. $\left(11\times 4\right)+\left(8\times 4\right)+\left(8\times 9\right)=148\text{ calories}$

b.

To determine

To calculate : The value of the expression, for the amount of the calories received from whole milk having 20g protein

Answer to Problem 44E

The value of the expression, for the amount of the calories received from whole milk having 20g protein

  $\left(20÷4\right)\times 148=740\text{ calories}$

Explanation of Solution

Given information :

Consider, the expression for the amount of the calories received from whole milk having 20g protein

  $\left(20÷4\right)\times 148$

$$

Calculation :

The value of the expression, for the amount of the calories received from whole milk having 20g protein ,

  $\begin{array}{l}\left(20÷4\right)\times 148\\ \left(20÷4\right)\times 148=\left(5\right)\times 148\left[\text{divide within parentheses}\right]\\ \left(20÷4\right)\times 148=740\left[\text{multiply}\right]\end{array}$

Therefore,

The value of the expression, , for the amount of the calories received from whole milk having 20g protein ,

  $\left(20÷4\right)\times 148=740\text{ calories}$