Which of the following functions represents the following graph?
f(x) = – |x| + 2

f(x) = –x + 2

f(x) = –x2 + 2

f(x) = –x3 + 2

Question

Which of the following functions represents the following graph?
 f(x) = – |x| + 2 

 f(x) = –x + 2 

 f(x) = –x2 + 2 

 f(x) = –x3 + 2

anonymous · Answer

attachment

luigi0210 · Answer

well it's a parabola..

ganeshie8 · Answer

and its facing downwards

luigi0210 · Answer

|dw:1371189521909:dw|

luigi0210 · Answer

or -x^3

anonymous · Answer

sooo its c ? im a little confused.

ganeshie8 · Answer

good guess :) it has to be c ! oly c is quadratic in the options

anonymous · Answer

soo i was right ? yaee thankkss very muchooo ! (:

anonymous · Answer

What is the solution to the equation 7 3x ≈ 9 ? 

 x = 0.376 

 x = 0.295 

 x = –0.295 

 x = –0.376

luigi0210 · Answer

:l

anonymous · Answer

idk how to do it :(

luigi0210 · Answer

is there a sign between the 7 and 3x?

ganeshie8 · Answer

is the 3x in exponent ?

anonymous · Answer

yesss.

ganeshie8 · Answer

take log both sides

luigi0210 · Answer

Do you know how to convert to logs? @Lesha

anonymous · Answer

nooooo :(. i did it in vhemistry but i never could figure it out.

ganeshie8 · Answer

its a simple thingy much simpler than the polynomial stuff uve been doing so far

anonymous · Answer

so is it lod7^3=2.53 and log 9 =0.95

ganeshie8 · Answer

$\large 7^{3x} = 9$

ganeshie8 · Answer

$\large 7^{3x} = 9$


take log base7 both sides

$\large \log_7 7^{3x} = \log_7 9$

ganeshie8 · Answer

$\large 7^{3x} = 9$


take log base7 both sides

$\large \log_7 7^{3x} = \log_7 9$

$\large 3x \log_7 7 = \log_7 9$

ganeshie8 · Answer

$\large 7^{3x} = 9$


take log base7 both sides

$\large \log_7 7^{3x} = \log_7 9$

$\large 3x \log_7 7 = \log_7 9$

$\large 3x  = \log_7 9$

ganeshie8 · Answer

do u knw how to use calculator and find log fo a number ?

luigi0210 · Answer

couldn't we just use 
$$\log_{7} 9=3x$$

luigi0210 · Answer

nvm I was late >.>

anonymous · Answer

ill try

ganeshie8 · Answer

$\large 7^{3x} = 9$


take log base7 both sides

$\large \log_7 7^{3x} = \log_7 9$

$\large 3x \log_7 7 = \log_7 9$

$\large 3x  = \log_7 9$

$\large 3x  = \log_7 9$

$\large 3x  = \frac{\log 9}{\log 7}$

ganeshie8 · Answer

use ur calculator and find wats $\log 9$

ganeshie8 · Answer

use ur calculator and find wats $\log 7$

ganeshie8 · Answer

divide

anonymous · Answer

ii did and i got 0.885

luigi0210 · Answer

Haha, @ganeshie8 is a genius :P

ganeshie8 · Answer

lol , try again doesnt look correct

ganeshie8 · Answer

knw what, u did the division reverse

ganeshie8 · Answer

check it once

anonymous · Answer

okk so  so is it lod7=0.85 and log 9 =0.95 . am i right so far ?

ganeshie8 · Answer

yes, now take log 9 / log 7

ganeshie8 · Answer

0.95/0.85 = ?

anonymous · Answer

i got 1.11

ganeshie8 · Answer

thats right, so 


3x = 1.11

x = ?

anonymous · Answer

0.37

anonymous · Answer

thats the answer . thanksss veryy muchh (:

ganeshie8 · Answer

np :)

luigi0210 · Answer

Another soul enlighten, way to go! @ganeshie8

ganeshie8 · Answer

lol, Lesha amazes me shes in oly her highschool and does these nasty problems for Algebra honors !