The height of a person after he has left the trampoline in a jump can be modeled by the function h= -3t(-4t+8), where h is the height of the person and t is the time in seconds. How long is the person in the air before he lands back on the trampoline?

h=20t

Step-by-step explanation:

h=-3t(-4t+8)

-3t(-4t)=12t

12t+8=20t

h=20t

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: