In a physics class demonstration, a ball is dropped from the roof of a building, 72 feet above the ground. The height h, in feet, of the ball above the ground is given by the function h= − 16t^2+ 72 where t is the time in seconds. How long does it take for the ball to reach the ground?

Football player weighed 170 2/3 pounds in may. during the summer he gained 25 5/12 pounds. during the first week of fall practice he lost 10 1/4 pounds and during the second week he lost another 3 1/2 ponds. how much does he weigh at this point? a.182 1/3ib b.181 1/2ib c.182 5/12ib d.183 2/3ib

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x