Question

Which statement best describes the effect of replacing the function f(x) = 2x - 2 with the function g(x) = 2x + 5?

The graph shifts 7 units left.

The graph shifts 5 units left.

The graph shifts 2 units up.

The graph shifts 3 units up.

Answer 1

@jagr2713 , @TheSmartOne

Answer 2

Please help!

Answer 3

HI!!

Answer 4

Hey

Answer 5

to get from \(2x-2\) to \(2x+5\) you would add 7
that move it up 7 units

Answer 6

i see that is not one of your choices though, hmm

Answer 7

Yeah

Answer 8

let me think, maybe they want you to say it shifts left or right, kinda strange
answer 3 and 4 are out for sure

Answer 9

Yeah I wouldnt think one of those two are it.

Answer 10

i cannot see another possible answer
they both have the same slope, so they are parallel, hard to say how they want you to answer
one crosses the x axis at 1, the second crosses the x axis at \(-\frac{5}{2}\) so you could say it was shifted left but not by any of your choices

Answer 11

ok
here is a picture
you can see one is 7 units up form the other or \(\frac{7}{2}\) to the left

Answer 12

http://www.wolframalpha.com/input/?i=y%3D2x-2%2Cy%3D2x%2B5

Answer 13

Yeah I see that

Answer 14

i will be happy to help, but i didn't help much on this one
maybe it is a typo?

Answer 15

\[\sqrt2\sqrt[3]{2}\] right? easier to use fractional exponents

Answer 16

yes

Answer 17

\[\frac{1}{2}+\frac{1}{3}=\frac{5}{6}\]

Answer 18

so your answer is
\[\sqrt[6]{2^5}\]

Answer 19

yes

Answer 20

ok

Answer 21

we have to compute the second year and the fourth year

Answer 22

\[500(1.05)^4=607.75\]
\[500(1.05)^2=551.25\]is a start

Answer 23

then subtract, and divide the result by 2, since it is the average over two years

Answer 24

\[\frac{607.75-551.25}{2}\] is what you need

Answer 25

I got 28.25

Answer 26

http://www.wolframalpha.com/input/?i=%28500%281.05%29%5E4-500%281.05%29%5E2%29%2F2

Answer 27

yeah me too

Answer 28

for the 1st one I would put D 3 units up

Answer 29

yeah B

Answer 30

Yay!

Answer 31

whew !

Answer 32

How about for this one? I think it is D

The sales totals at Linda's food store have increased exponentially over the months. Which of these best shows the sales in the first three months?

$1200 in the first month, $1260 in the second month, and $1323 in the third month

$1200 in the first month, $1250 in the second month, $1300 in the third month

$1200 in the first month, $1272 in the second month, $1344 in the third month

$1200 in the first month, $1285 in the second month, $1370 in the third month