Question

medal and fan for best answer :) please help?


a basketball is thrown upward. the height f(t) in feet of the basketball at different times t,in seconds is shown by the following function:

f(t)=-16t^2+44t+12

which of the following is A reasonable domain of the graph of the function when the basketball falls from its highest height to the ground?

a.-0.25<=x<=2
b.0<=x<=3
c.1<=x<=2.4
d.1.4<=x<=3

Answer 1

@satellite73
@beccaboo333
@jim_thompson5910

Answer 2

you need to find the vertex of f(t)=-16t^2+44t+12

Answer 3

actually you can get away with just knowing the x coordinate of the vertex

Answer 4

do you know how to do this?

Answer 5

nope :/

Answer 6

use the formula x = -b/(2a)

Answer 7

confused :/

Answer 8

wait is the answer a??

Answer 9

this page may explain

http://www.mathwarehouse.com/geometry/parabola/standard-and-vertex-form.php

let me know what you think

Answer 10

okay I understand a little better now

Answer 11

so you understand how I'm getting x = -b/(2a) ?

Answer 12

sorta

Answer 13

do you know what a,b represent?

Answer 14

no

Answer 15

The general equation for a quadratic is