judah

in your own words, describe how limits can be used to find the instantaneous rate of change of a function.

The path of a baseball relative to the ground can be modelled by the function f(t)=−t^2+8t+1, where d(t) represents the height of the ball in metres, and t represents time in seconds. What is the speed of the ball when it hits the ground?

i found the time at which it hits the ground = 8.123 by doing quadratic formula so now do i plug that into the equation to find the speed?

b (18)

B is right, so rae is too.

I think its B

what 2 numbers round to 700