Why do factors that cause a change in individual supply also affect the market supply curve?

Financial performance is measured in many ways. requirements 1. explain the difference between lag and lead indicators. 2. the following is a list of financial measures. indicate whether each is a lag or lead indicator: a. income statement shows net income of $100,000 b. listing of next week's orders of $50,000 c. trend showing that average hits on the redesigned website are increasing at 5% per week d. price sheet from vendor reflecting that cost per pound of sugar for the next month is $2 e. contract signed last month with large retail store that guarantees a minimum shelf space for grandpa's overloaded chocolate cookies for the next year