Question

data on exports and imports by countries around the world are often shown in graphs for comparison purposes. the given graph is one example. the number line in the graph represents net exports in billions of dollars for six countries. net exports are obtained by subtracting imports from exports; a negative net export means that the country imported more goods than it exported. complete parts a through d.

a. estimate the net amount of exports for country c. is the answer a positive or a negative integer? select the correct choice below and fill in the answer box to complete your choice.
○ a. the answer is a negative integer. the net amount of exports for country c is -$ billion.
○ b. the answer is a positive integer. the net amount of exports for country c is $135 billion.
explain what this number indicates about the imports and the exports of the country c. select the correct choice below and fill in the answer box to complete your choice.
○ a. this means that the imports of country c exceed its exports by $ billion.
○ b. this means that the exports of country c exceed its imports by $135 billion.
b. estimate the net amount of exports for country a. is the answer a positive or negative integer? select the correct choice below and fill in the answer box to complete your choice.
○ a. the answer is a positive integer. the net amount of exports for country a is $ billion.
○ b. the answer is a negative integer. the net amount of exports for country a is -$136 billion.
explain what this number tells you about the imports and exports of the country. select the correct choice below and fill in the answer box to complete your choice.
○ a. this means that the imports of country a exceed its exports by $ billion.
○ b. this means that the exports of country a exceed its imports by $ billion.

Explanation:

Step1: Analyze country C

Looking at the graph, country C's bar is on the positive side of the number line. The length corresponds to 135. Since net exports \(=\text{exports}-\text{imports}\), a positive value means \(\text{exports}-\text{imports}=135\), so exports exceed imports by 135 billion.

Step2: Analyze country A

Country A's bar is on the negative side of the number line. The length corresponds to 136. Since net exports \(=\text{exports}-\text{imports}=- 136\), we can rewrite it as \(\text{imports}-\text{exports}=136\), so imports exceed exports by 136 billion.

Answer:

For country C:

• B. The answer is a positive integer. The net amount of exports for country C is \(\$135\) billion.
• B. This means that the exports of country C exceed its imports by \(\$135\) billion.

For country A:

• B. The answer is a negative integer. The net amount of exports for country A is \(-\$136\) billion.
• A. This means that the imports of country A exceed its exports by \(\$136\) billion.