No reference needed. Question related to statistic and finance

Assuming you are analysing the determinant of corporate investment, measured by capital expenditure. You have now collected 50 companies' data over 2000-2019. Please answer Question 7-8- Question 7+ Assume you want to examine the impact of firms' growth opportunities, measured by book to market ratio, on corporate investment in a regression framework. Write down the regression model you would like to use and discuss which variables you will include in your regression, and why you will include those variables. [Total for Question 7 = 10 marks]~ Question 8- If the coefficient of book to market is positive and statistically significant at 1%, what conclusion can you draw from it? [Total for Question 8 = 10 marks]~