Help please with these 3 problems

Purchase of treasury stock would be increase in investing activities O Decrease in investing activities Increase in financing activities Decrease in financing activities Question 9 10 pts Sell of treasury stock would be a(n) Increase in investing activities O Decrease in the investing activities Increase in Financing activities Decrease in financing activities Question 10 10 pts Given the following information, what amount of cash was received for the issuance of stock? Change in Retained Earnings 37,500 Change in Common Stock 100,000 Change in Paid In Capital in excess of par 87,500 50.000 O 137,500 137,500 187,500