The position of a particle moving to the right on the x x
-axis is given by x(t)
x
(
t
)
, where x(t)
x
(
t
)
is measured in inches and t
t
is measured in minutes for 0≤t≤100
0
≤
t
≤
100
. If y=x(t)
y
=
x
(
t
)
is a linear function, which of the following would most likely give the best estimate of the speed of the particle, in inches per minute, at time t=20
t
=
20
minutes?

fwms@lil_ben06

step-by-step explanation:

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

happy to

pls mark as brainliest

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb