Answer:
BEFmZ Is the answer i think
Step-by-step explanation:

well, when x = 0, namely at the very beginning, y = 27, thus, that IS the initial value.
Answer:
and
the intersection points.
Step-by-step explanation:
Intersection point of two functions is a common point which satisfies both the functions.
Given functions are,


For a common point of these functions,






For
,


For
,


Therefore,
and
the intersection points.
(-7,3) here is the answer, easy one
It takes 4.3 seconds for the rocket to return to earth.
The equation is:

where -9.8m/sec² is the acceleration due to gravity, v₀ is the initial velocity, and h₀ is the initial height. We will go from the assumption that the rocket is launched from the ground, so h₀=0, and we are told that the initial velocity, v₀, is 42. This gives us:

We will use the quadratic formula to solve this. The quadratic formula is:

Plugging in our information we have:

x=0 is when the rocket is launched; x=4.3 is when the rocket lands.