Question

Evaluate the expression, using the given value of the variable.

3 – 7x + 2x when x = 3

A.
–30

B.
–12

C.
–18

D.
–24

Answer 1

@10115658 B

Answer 2

nope

Answer 3

what's 7x+2x

Answer 4

9

Answer 5

9 what

Answer 6

9x

Answer 7

ok, we have 3 - 9x

Answer 8

now plug in 3 for x and solve

Answer 9

-6x

Answer 10

@10115658 what??

Answer 11

3 - 9(3)

Answer 12

\[3-7x+2x\] all you have to do is plug in 3 for x, meaning where ever there is a x, put a 3 there instead. \[3-7(3)+2(3)\] now just evaluate :)

Answer 13

what's 9 x 3

Answer 14

27

Answer 15

3-27

Answer 16

-24

Answer 17

It's 7(3) not 9(3)

Answer 18

7x + 2x = 9x

Answer 19

yea

Answer 20

-24 is correct, good job

Answer 21

Still wrong, it's -7x+2x

Answer 22

-5

Answer 23

\[3-7x+2x \implies 3-5x \implies 3-5(3)\]

Answer 24

-2

Answer 25

you're right, my bad

Answer 26

No problem :)

Answer 27

i forgot about the negative

Answer 28

The answer is -2?

Answer 29

No, how did you get -2?

Answer 30

http://prntscr.com/74spe7

Answer 31

\[3-7x+2x \implies 3-5x \implies 3-5(3)\]

Answer 32

we are multiplying 5 by 3, that is what the bracket means :)

Answer 33

3-5 X 3?

Answer 34

Yes, that's what it means

Answer 35

So it is B?

Answer 36

That sounds good

Answer 37

Thanks