Question

what is the domain of the following parabola?
a)x>=1
b)x<=1
c)all real numbers
d)y<=2

Answer 1

domain = possible x values

Answer 2

since the parabola is wide opening down, there are not restrictions on x values.
so the domain is all real numbers

Answer 3

Thanks, can you help me with another one @ganeshie8 ?

Answer 4

shoot

Answer 5

water coming out of a fountain is modeled by the function f(x)=-x^2+8x+2 where f(x) represents the height in feet of the water from the fountain at different times x, in seconds.
what does the average rate of change of f(x) from x=1to x=4 represent?

Answer 6

average rate of change = \(\large \frac{f(4) - f(1)}{4-1}\)

Answer 7

find out f(4), f(1) and plug them above...

Answer 8

a.)the water travels an average distance of 3 feet from 1second to 4seconds
b)the water travels an average distance of 2 feet from 1 second to4 seconds
c)the water rises up with an average speed of 3 feet per second from 1 second to 4 seconds
d)the water rises up with an average speed of 2 feet per second from 1 second to 4 seconds

Answer 9

@ninjasandtigers do you know what the answer is

Answer 10

sorry i don't

Answer 11

@ganeshie8 isnt it kinda mean to leave @liorafanny hanging here?