Chapter SH, Problem 1.11EP

a.

To determine

To represent: the cost of food by illustrating the distributive property.

Answer to Problem 1.11EP

  $C=2\times \left(\$1.19+\$1.79+\$2.09\right)$ .

Explanation of Solution

Given:

Meiko buys 2 cheeseburger, 2 fries, and 2 milkshakes is shown below on the table:

Item	Cost
Cheeseburger	$\$1.19$
French fries	$\$1.79$
Milkshakes	$\$2.09$

Calculation:

According to the question,

The cost of cheeseburger, French fries and milkshake in a fast-food restaurant are $\$1.19,\$1.79,\text{ and }\$2.09$ respectively.

Meiko buys 2 cheeseburger, 2 French fries and 2 milkshakes.

One expression that represents the cost of the food will be obtained by first multiply each cost by the number of items and then adds them. That is,

  $C=2\times \left(\$1.19\right)+2\times \left(\$1.79\right)+2\times \left(\$2.09\right)$

Another expression that represent the cost of the food will be obtained by first adding the rate of each item and then multiply the sum by 2 as Meiko has bought 2 of each item. That is,

  $C=2\times \left(\$1.19+\$1.79+\$2.09\right)$

b.

To determine

To find: the actual amount received by restaurant from selling the food.

Answer to Problem 1.11EP

  $C=\$10.14$ .

Explanation of Solution

Given:

Meiko buys 2 cheeseburger, 2 fries, and 2 milkshakes is shown below on the table:

Item	Cost
Cheeseburger	$\$1.19$
French fries	$\$1.79$
Milkshakes	$\$2.09$

Calculation:

b.

The cost of the food will be,

  $\begin{array}{l}C=2\times \left(\$1.19+\$1.79+\$2.09\right)\\ C=2\times \$5.07\\ C=\$10.14\end{array}$

Therefore, the restaurant receives $C=\$10.14$ from selling the food.