You are given the following sample data on the age of women…

You are given the following sample data on the age of women and their annual expenditures on subscriptions.        Age           Annual Expenditures ($)19120 23180 27220 31280 Provide all answers to 2 decimal places.1. Calculate the slope of the estimated regression equation: [Slope]2. Calculate the y-intercept of the estimated regression equation: [yintercept]3. What is the estimated regression equation?   

Consider a galvanic cell based on the reaction  Al3+ (aq) +…

Consider a galvanic cell based on the reaction  Al3+ (aq) + Mg (s) -> Al (s) + Mg 2+ (aq) The half-reactions are: Al 3+ + 3e- -> Al        E°= -1.66 V Mg2+ + 2e-  ->  Mg     E°= – 2.37 V Give the balanced cell reaction, calculate E°, and write the line notation.