Cell Phone Ad Spending A certain industry's ad spending

Last updated: 7/13/2022

Cell Phone Ad Spending A certain industry's ad spending between 2005 (t = 1) and 2011 (7) is projected to be S(t) = 0.8510.97 (1st≤7) where S(t) is measured in billions of dollars and t is measured in years. What is the projected average spending per year on these ads between 2005 and 2011? (Round your answer to two decimal places.) x billion/yr $