A baseball player hits a baseball into the air with an initial vertical velocity of 78 feet per second. The player is 6 feet tall, and the height of the ball when hit is half his height. At what two different times does the baseball have a height of 84 feet above the ground? Do not round your answer. (Hint: -54 is a helpful number)

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Solve 2x+y=3 x+y=5 in substitution method

Solve -.016x= -16. need solving this