Ah hah ! NOW I see it. Thanks to BellBell for a good link.
My first impression is a dog bone standing up on one end.
You're talking about the area of the figure, so I'll think that over
before I look at the choices.
I see:
-- 2 semi-circles = 1 whole circle.
and
-- (1 rectangle) minus (a trapezoid).
Now I'll look through the choices.
A). No good. The trapezoid is cut OUT of the figure,
and shouldn't be added into it.
B). Oh ! Yes ! I didn't look at it that way at first, but
I can see how that works. 'B' is good.
C). and D). Yes. This was my description above.
So 'A' is the method that's wrong.
Answer:
..........................
(0,2)
(1,5)
(2,8)
(3,11)
(4,14)
Doubling every 3 years, meaning 200% every 3 years.
The answer is 24 years.
Hope this helps. - M
Well, Brainly really doesn't like questions that are lifted straight out of exams, tests, or quizzes, so there's only so much I can say.
... You've GOT the formula for the height h at any time t .
... It TELLS you to find t when h=0.
... So write the equation
-16 t^2 + 32 t = 0
and then solve the equation to find t .
You'll find two solutions for t .
One of them is. t=0 .
This reveals the mind-blowing fact that the instant before the rocket was launched, at t=0, the rocket was on the ground.
The other solution for t will tell you how many seconds after launch the rocket is back on the ground.
