In Out
5 2
6 4
7 6
8 8
9 10
10 12
11 14

The table shows x-values going in and y-values coming out. The function being used is
A)
f(x) = 2x
B)
f(x) = x - 3
C)
f(x) = x - 8
D)
f(x) = 2x - 8

Question

In	Out
5	2
6	4
7	6
8	8
9	10
10	12
11	14

  The table shows x-values going in and y-values coming out. The function being used is
A)
f(x) = 2x	
B)
f(x) = x - 3	
C)
f(x) = x - 8	
D)
f(x) = 2x - 8

misty1212 · Answer

HI!!

misty1212 · Answer

it is not $f(x)=2x$ since that would make $f(5)=10$ but $f(5)=2$

misty1212 · Answer

it is not $f(x) = x - 3	$ since that would make $f(6)=6-3=3$ but $f(6)=4$

anonymous · Answer

Alright So now A. isnt right

misty1212 · Answer

and it sure as hell is not $f(x)=x-8$ since you are not subtracting 8 from the first number to get the second

anonymous · Answer

nor B right?

anonymous · Answer

Ok so then then D?

misty1212 · Answer

nope 
not A
not B
not C

misty1212 · Answer

gotta be D
you can check to see that if you double the first number, then subtract 8 from the result, you get the second number

anonymous · Answer

Thank you so much!

anonymous · Answer

Could you help with just 2 more?

misty1212 · Answer

$$\color\magenta\heartsuit$$

misty1212 · Answer

sure why not?

misty1212 · Answer

i charge $10 an answer, $20 for correct ones

anonymous · Answer

Sounds good

misty1212 · Answer

just kidding...

anonymous · Answer

Solve the system. 
5/8x -2/3y = -3
3/4x + 1/2y = -4 

A. (9, 10)
B. (9/2, 5)
C. (16, -39/2)
D. (-56/9, 4/3)

misty1212 · Answer

lol this is donkey work, let the computer do it

anonymous · Answer

I know its not A and ok take your time

misty1212 · Answer

here i will show you how

misty1212 · Answer

hmm is there a typo there? none of those answers are correct

anonymous · Answer

Ill show you a picture

misty1212 · Answer

$$\frac{5}{8}x-\frac{2}{3}y=-3\
\frac{3}{4}x+\frac{1}{2}y=-4$$

misty1212 · Answer

that is what i read but none of the answer choices are right 
yeah post a picture

anonymous · Answer

attachment

misty1212 · Answer

hmm that is what you wrote too, but none of those choices are correct !

anonymous · Answer

Hm idk why? well let me move on to another question (:

misty1212 · Answer

hold on a sec, let me try something

misty1212 · Answer

here is the right answer http://www.wolframalpha.com/input/?i=5x%2F8-2y%2F3+%3D+-3%2C3x%2F4+%2B+y%2F2+%3D+-4+

anonymous · Answer

attachment

anonymous · Answer

Ok its fine!

misty1212 · Answer

most of the answers to the last one don't even make logical sense, but the answer you are looking for is D
an exponential function with a base bigger than one will eventually exceed any polynomial function

anonymous · Answer

Thanks so much!

misty1212 · Answer

sorry about the middle one, i think they made a mistake

misty1212 · Answer

$$\color\magenta\heartsuit$$

anonymous · Answer

Its fine (: