Question

bret through a baseball up in the air. the following table represents the height f(t) in meters of the ball above the ground at time t seconds.

which of the following is represented by the y intercept of f(t)?
a. the ball touches the ground after 6 seconds
b. the ball was thrown from a height of 3 meters
c. the ball reaches a maximum height of 4 meters
d. the ball reaches a maximum height in 2 seconds

Answer 1

table:

time:0-2-4-6
height:3-4-3-0

Answer 2

@phi

Answer 3

@poopsiedoodle

Answer 4

Which one is the x axis, and which one is the y axis?

Answer 5

is it like that?

Answer 6

yes

Answer 7

B. The time you start at is 0 seconds, but the height value at that time was 3 meters. So, you started at 3 meters.

Answer 8

will you help me with one more?

Answer 9

Sure

Answer 10

the function below shows the number of car owners f(t) in thousand in a city in different years t
F(t)=0.25t^2-1.5t +2.5
the average rate of change of f(t) from t=5 to t=8 is ? thousand per year.

Answer 11

can you help?

Answer 12

Not sure what the rate of change means, but when t=5, the equation is 1.25, and when t=8, it's 6.5.

Answer 13

a food packet is dropped from a helicopter and is modeled by the function f(x)=-15x^2+6000
use the graph to determine the reasonable domain of f(x)based on the context

Answer 14

a.x<=6000
b.0<=x<=20
c -20<=x<=20
d all real numbers

Answer 15

still there?

Answer 16

hello??

Answer 17

the domain are the x values (representing time since the food was dropped)
I would pick from 0 to 20 (when the food hits the ground, at zero altitude)