Question

Please help!! I’m very stressed. Will get brainliest!!! Zoom if u can’t see.

Answer 1

#14:
It asks you to find the n-intercept for the equation you found. It seems like the one you found is (again if I'm wrong, tell me):
$n=-3t+56$

To find the n-intercept, you just have to set the equation equal to 0, and solve for t, and when you get a value for t, that's when the function has a n-intercept. So let's do that:
$0 = -3t+56$

Solve for t:
$t = \frac{-56}{-3} = 18.667$
And that's when the function has a n-intercept, at t=18.667 years.

#15:
The n-intercept for this authentic situation means that in 18.667 years, there will be no countries with fuels for atomic bomb, given the trend right now.

#16:
$f(t) = -3t+56$
And that's it.

#17:
$f(18)=-3(18)+56$
$f(18)=-54+56=2$
This means that there will be only 2 countries with fuel for atomic bomb left in the world by the year 2018.

#18:
$f(10) = -3(10)+56$
$f(10)=-30+56=26$
This means that there will be 26 countries in 2010 that have fuel for an atomic bomb.