The height h in meters of a football kicked into the air can be modelled by the
function h(t) = -4.9t^2 +25t + 1 where t is
in seconds.
a. Find how long after being kicked it
takes for the ball to hit the ground.
b. Determine when the ball will reach a
height of 20 meters.
c. Find the maximum height of the ball.

Awall map has a scale of 128 miles = 6 inches. the distance between springfield and lakeview is 2 feet on the map. what is the actual distance between springfield and lakeview? 384 miles 512 miles 1.13 miles 42.7 miles

Find the cosine function that is represented in the graph.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling