Dr. Han is conducting an experiment on how midday naps affect happiness. Dr. Han had 2 experimental groups either a 15-minute nap or a 30-minute nap at 1 pm while the control group had no nap. At 3pm, all participants completed a happiness questionnaire that gave them a happiness score. The participants happiness score is the \

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =