Question

Evaluate the following absolute value function for x = - 3.

F [x] = 2 | 4x - 5| + 2

Answer 1

First, substitute -3 for x.
Then calculate the expression inside the absolute sign.
Then take the absolute value.
Then multiply by 2.
Then add 2.

Answer 2

ok, hold on a sec

Answer 3

Show me one step at a time, and I'll guide you through it.

Answer 4

4 x -3 - 5 + 2 . 4 x -3 = -12 x 2 = 24 24 - 5 = 19 + 2 = 21

Answer 5

wait.... i think i made a mistake

Answer 6

F(x) = 2 |4x - 5| + 2
First, substitute -3 in for x:
F(-3) = 2 | 4(-3) - 5 | + 2

Answer 7

4 x -3 = 12 , - 5 = 7 x 2 = 14, + 2 = 16?

Answer 8

Now calculate the expression inside the absolute value sign:
F(-3) = 2 | 4(-3) - 5 | + 2
F(-3) = 2 | -12 - 5 | + 2
F(-3) = 2 | -17 | + 2

Answer 9

Now calculate the absolute value of -17: |-17| = 17, so
F(-3) = 2 | -17 | + 2
F(-3) = 2(17) + 2
Now just multiply 17 by 2 and then add 2:
F(-3) = 34 + 2
F(-3) = 36

Answer 10

4 x (-3) = -12, not 12

Answer 11

ok, i wasn't calculating the absolute value. THX so much, now i know what i did wrong. [:

Answer 12

i thought i put - 12

Answer 13

guess not [:

Answer 14

Then -12 - 5 = -17
then the absolute value of -17 is positive 17

Answer 15

yes, like 12 + 5

Answer 16

Thank you

Answer 17

wlcm

Answer 18

Choose the correct graph for the following inequality.
y ≤ 2x - 4

Answer 19

Dashed lines mean simply < or >.
You have <=, so it must be a solid line.

Answer 20

Now you need to choose between the first and third graphs.

Answer 21

Choose point (0, 0).
Does point (0, 0) make the inequality true or false?