Please i need a new and clear answer I don't want a copy answer from other teachers

Linda Jones, an accountant for Golding, Inc., has decided to estimate the fixed and variable components associated with the company's repair activity. She has collected the following data for the past six months: Repair Hours Total Repair Costs 10 $ 800 20 1,100 15 900 12 900 18 1,050 25 1,250 Required: 1. Estimate the fixed and variable components for the repair costs using the high- low method. Using the cost formula, predict the total cost of repair if 14 hours are used. 2. Estimate the fixed and variable components using the method of least squares. Translate your results into the form of a cost formula, and using that formula, predict the total cost of repairs if 14 hours are used. 3. Using the method of least squares, what are the coefficient of determination and the coefficient of correlation? 2. Regression is performed using Excel, with the results as follows: Summary Output Regression Statistics Multiple R 0.984523 R Square 0.969285 Adjusted R Square 0.961607 Standard Error 32.19657 Observations 6 ANOVA MS df SS F Significance F 126.2311 Regression Residual Total 0.000357 1 4 5 130853.5 4146.476 135000 130853.5 1036.619 Standard Error Lower Upper 95% Lower 95.0% Upper 95.0% Coefficients Stat P-value 95% Intercept X Variable 1 509.9119 29.40529 45.55789 11.19261 0.000363 383.4227 2.617232 11.23526 0.000357 22.13867 636.4011 36.6719 383.4227 22.13867 636.4011 36.6719