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2. What was the difference between the 52-week high and 52-week low price for one share of PetroChina Company Lid? 3. What is the difference between the day's high and low prices for McDonald's Corporation? 4. Determine the volume for each of the following stocks. a. Berkshire Hathaway Inc b. McDonald's Corporation c. Texas Instruments Inc d. Westpac Banking Corporation 5. Determine the closing price on April 21 for each of the following stocks. a. Texas Instruments Inc b. Freeport-McMoRan Copper & Gold Inc 6. Use the information from Exercise 5 to determine the percent of net change from April 21 to April 22 for each of the corporations listed in that question. Round answers to the nearest tenth of a percent. 7. On April 22, which stock(s) had a daily high that was approximately 50% lower than the 52-week high? 8. If the April net change for Westpac Banking Corporation was -3.03 what was the closing price for that day