Answer:
4x-8+4y
Step-by-step explanation:
Answer:
9.6 seconds
Step-by-step explanation:
The equation for projectile motion in feet is
where
is the initial velocity in ft/s and
is the initial height in feet.
We are given that the initial upward velocity is
and the initial height is
. Thus, plugging these values into our equation, we get
as our equation for the situation.
The firework will land, assuming it doesn't explode, when
, thus:

Since time can't be negative, then the firework will land after 9.6 seconds, assuming it doesn't explode at the time of landing.
Answer:
C
Step-by-step explanation:
y = 2.5 x - 57
y = Profit: 143
143 = 2.5 x - 57 Add 57 to both sides
143 + 57 = 2x - 57 + 57 Combine like terms
200 = 2.5 x Divide by 2.5
200/2.5 = 2.5x/2.5
x = 80 plants
Answer:
23/3
Step-by-step explanation:
They already give you the area of one base, which is great! The volume of a rectangular prism is l · w · h, and they've already done h · l for you.
All you do is multiply the two values you see on screen.
4/3 · 23/ 4
= 23/3
(Since there is a 4 both on top and on the bottom, you can cross them out, instead of multiplying everything across)
I hope this helped!