The equation used to predict the stock price (in dollars) at the end of the year for a restaurant chain is

ŷ = -86 + 7.46x₁ - 1.61x₂

where x₁ is the total revenue (in billions of dollars) and x₂ is the shareholders’ equity (in billions of dollars). Use the multiple regression equation to predict the y-values for the values of the independent variables.

(a) x₁ = 27.6, x₂ = 15.3 

(b) x₁ = 24.1, x₂ = 14.6

(c) x₁ = 23.5, x₂ = 13.4 

(d) x₁ = 22.8, x₂ = 15.3