i want answer of Question 19 & 20 both because the are combined

Question no.19 Tax efficiency is a measure, ranging from 0 to 100, of how much tax due to capital gains stock or mutual funds investors pay on their investments each year, the higher the tax efficiency, the lower is the tax. In the article At the Mercy of the Manager (Financial Planning, Vol. 30(5), pp. 54 56), C. Israelsen examined the relationship between investments in mutual fund portfolios and their associated tax efficiencies. The following table shows percentage of investments in energy securities (x) and tax efficiency (y) for 10 mutual fund portfolios. X y 3.1 98 3.2 94 3.7 92 4.3 89 4.0 87 5.5 85 6.7 82 7.4 77 7.4 72 10.6 53 Find the regression equation for the data points. (2.5) Question no. 20 Using output of Question no. 19: (2.5) a) Interpret the Coefficients of the regression equation. b) Predict the tax efficiency of a mutual fund portfolio with 5.0% of its investments in energy securities and one with 7.4% of its investments in energy securities, and interpret your results