please provide solutions for both parts neatly. thanks .

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noitework: Chapter 9 Homework Score: 0 of 1 pt P9-13 (similar to) 1 8 of 11 (2 complete) HW Score Previous Question WACC-Market value weights The market values and after-tax costs of various sources of capital used by Ridge Tool are shown in the following table: a. Calculate the firm's weighted average cost of capital b. Explain how the firm can use this cost in the investment decision-making process. a. The firm's weighted average cost of capital, using market value weight is % (Round to two decimal places.) Enter your answer in the answer box and then click Check Answer. remaining Clear All Check Arm using mark) 0 Data Table in order to copy the contents of the data table below (Click on the icon here into a spreadsheet.) Source of capital Long-term debt Preferred stock Common stock equity larket value $750,000 $60,000 $600,000 Individual cost 5.5% 9.5% 14.79 Done and then click Check