Aball is thrown from an initial height of 7 feet with an initial upward velocity of 28/fts . the ball's height h (in feet) after t seconds is given by the following. =h+7−28t16t2 find all values of t for which the ball's height is 15 feet. round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.)

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Which of the following is the graph of y= square root -x-3