A rock is launched from a cannon. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds.

After 1 second, the rock is 243 feet in the air; after 2 seconds, it is 452 feet in the air.
Find the height, in feet, of the rock after 5 seconds in the air.

Question

A rock is launched from a cannon. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds.

After 1 second, the rock is 243 feet in the air; after 2 seconds, it is 452 feet in the air.
Find the height, in feet, of the rock after 5 seconds in the air.

lulubj · Answer

1sec=243feet 
then 5 secs=x 
x = 5 times 243 feet 
x =1,220 feet

anonymous · Answer

it was wrong