Bret's Accounting & Tax Services is a small but locally well$-$known accounting firm in Sioux City, IA which completes taxes for individuals. Every year, firms like Bret's decide how much they will charge to complete and file an individual tax return. This price determines how many tax returns firms complete each year. $(4$points$)$

Suppose you are an office manager for a firm like Bret's Accounting and Tax Services and you are trying to determine what your firm should charge next year for tax returns. $$Bret$$s data$$ provided on the next page and also an excel file is provided to answer these questions.

a$)$ Graph the data using a scatter plot. Using the "Insert Trendline" function in Excel, determine whether you should use linear regression.

b$)$ Using Excel's Regression Analysis Function, run a regression and answer the following questions about your output. $($Place your regression results beneath the graph from part a$.)$ Show me the excel graph for both questions