Will give brainliest-H (t) = - 16t^2+28t

T is time in seconds.

How long will it take for the dolphin to make one jump, show your work.

For this case we have the following equation:

H (t) = - 16t ^ 2 + 28t

When the dolphin finishes a jump, then the height is equal to zero.

We have then:

-16t ^ 2 + 28t = 0

We look for the roots of the polynomial:

t1 = 0

t2 = 1.75 s

Therefore, the dolphin takes 1.75 seconds to make a jump.

Answer:

it will take for the dolphin to make one jump а bout:

t = 1.75 s