anonymous
  • anonymous
Check my answers to 3 questions? I will give a medal and fan
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
A function is shown in the table. x g(x) −2 2 −1 0 0 2 1 8 Which of the following is a true statement for this function? A. The function is decreasing from x = 0 to x = 1. B. The function is decreasing from x = −1 to x = 0. C. The function is increasing from x = 0 to x = 1. D. The function is increasing from x = −2 to x = −1.
anonymous
  • anonymous
Would it be c?
LynFran
  • LynFran
correct

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
C is correct...you can always think of it as a x,y chart if that helps.
anonymous
  • anonymous
Oh ok thank you to both of you! I have another question..
LynFran
  • LynFran
ok
anonymous
  • anonymous
Two quadratic functions are shown. Function 1: f(x) = 2x2 − 8x + 1 Function 2: x g(x) −2 2 −1 −3 0 2 1 17 Which function has the least minimum value and what are its coordinates? A. Function 1 has the least minimum value and its coordinates are (0, 1). B. Function 1 has the least minimum value and its coordinates are (2, −7). C. Function 2 has the least minimum value and its coordinates are (0, 2). D. Function 2 has the least minimum value and its coordinates are (−1, −3).
LynFran
  • LynFran
fast way to know this is to input 0 into both equation to see its output so...
LynFran
  • LynFran
when input 0 into function 1 we get f(0)=1 while g(0)=2 ....
anonymous
  • anonymous
So A?
LynFran
  • LynFran
yep
LynFran
  • LynFran
yes function 1 ... when x=0 y=1
anonymous
  • anonymous
sorry, I was distracted...go back to the last problem please. with the 2 function, I disagree with A
anonymous
  • anonymous
Yes I think its B, now that I look back at it @stacy.reed08
anonymous
  • anonymous
@pflorido , that's what I got!
LynFran
  • LynFran
how can it be B when they didnt give the x value of x=2 for g(x)?
anonymous
  • anonymous
ok, so looking at the chart I like to think of it as x,y instead of x, g(x). Based on the data given in the table, g(x) has a vertex at -1, -3, because x=-2 and x=0 have the same g(x) value. So the low point for g(x) is the vertex -1, -3
LynFran
  • LynFran
\[f(x)=2(x)^{2}-8(x)+1\]when x=-2 f(-2)=25 and g(x)=2 for the g(x) part they didnt give the function but they state the function output for the given value of x...thats how i see that question...
anonymous
  • anonymous
Water coming out from a fountain is modeled by the function f(x) = −x2 + 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 = 1 to x = 4 represent? a. The water travels an average distance of 3 feet from 1 second to 4 seconds. b. The water travels an average distance of 2 feet from 1 second to 4 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.
anonymous
  • anonymous
@LynFran it's really hard to explain on here, but here's my terrible drawing of g(x)...when you graph it, you can clearly see that -1,-3 is the vertex of the parabola....|dw:1439742811899:dw|
anonymous
  • anonymous
well, maybe not clearly from my drawing, but draw it yourself on paper and you'll see :)
anonymous
  • anonymous
@pflorido , for the actual question you're asking, I'd say you can cross off c and d, because they're talking about speed and it says in the problem that f(x) is the height of the water
anonymous
  • anonymous
now just plug in value so you can calculate the rate of change....so what's f(1) and f(4). Once you know those values, you can use them to find rate of change.
anonymous
  • anonymous
So sorry my computer ran out of battery
anonymous
  • anonymous
Ok one second...
anonymous
  • anonymous
f(1) is 9 and f(4) is 18
anonymous
  • anonymous
actually, hold on I'm re-reading the question and I'm not sure we can completely discount c and d yet! but still find the rate of change!
anonymous
  • anonymous
yes, f(1) and f(4) are correct, so now find the rate of change \[\frac{ y-y_{1}}{x-x_{1}}\]
anonymous
  • anonymous
So the coordinates would be (9,0) and (0,18)... I am a little confused @stacy.reed08
anonymous
  • anonymous
nope, you're coordinates are 1,f(1) and 4,f(4)....in other words (1,9) and (4,18)
anonymous
  • anonymous
*your...good thing I'm helping with math and not grammar!
anonymous
  • anonymous
Haha lol
anonymous
  • anonymous
looking at the rate of change equation, I realize I was definitely wrong at first! The y-values , or f(x), represent height, while the x-values represent time so the rate of change is literally distance divided by time...speed :)
anonymous
  • anonymous
So the rate of change is 9/3 or 3
anonymous
  • anonymous
So c?
anonymous
  • anonymous
yes, or still think of it as 3/1...since rate of change is a ratio....3 feet for every 1 second.
anonymous
  • anonymous
yes, c :)
anonymous
  • anonymous
Ok I just have one more.. I know what the answer is but I dont know what the calculation means in context to the problem....
anonymous
  • anonymous
I'll give it a shot!
anonymous
  • anonymous
The function f(x) = −x2 + 48x − 432 models the profit, in dollars, a game developer makes for selling a new game, where x is the number of games sold and f(x) is the amount of profit. Part A: Determine the vertex. What does this calculation mean in the context of the problem? - I know that the vertex is (24,144).... Part B: Determine the x-intercepts. What do these values mean in the context of the problem? -I know the x-intercepts are (12,0) and (36,0)
anonymous
  • anonymous
This equation is a parabola facing down, so the vertex would be the maximum profit that could be made.
anonymous
  • anonymous
Oh ok and the x-intercepts would be the prices when the profit is at zero, right?
anonymous
  • anonymous
I believe so
anonymous
  • anonymous
Thank you!!!!!! I got a 100%.... Can t thank you any more for all the help you gave me

Looking for something else?

Not the answer you are looking for? Search for more explanations.