Question

I am do confused i am so sure I got it right but it marks it as wrong.

Answer 1

Explanation:

Try the code AEAA. Let me know if its right or not.

Answer 2

CHGD

Explanation:

You should actually solve each of these puzzles to get the right code
1. To evaluate f(-2)

We have f(x) = x³ - 2x

Substitute -2 for x

==> (-2)³ - (2 x-2)
-2³ = -8
2 x -2 = -4

==> f(-2) = -8 - (-4)
==> f(-2) = -8 + 4 (two negatives make a positive
==> f(-2) = -4 Letter C

2. Evaluate g(-10)

`g(x) = (3x)/(2)`

`g(-10) = (3 * -10)/(2) \\= (-30)/(2) \\\\= \boldsymbol{-15}` Letter H

3. Evaluate h(-1)
h(x) = 2x² + x
h(1) = 2 x (-1)² - 1

= 2 x 1 - 1

= 1 Letter G

4. Evaluate f(3)
f(x) = x³ -2x
f(3) = 3³ - 2 x 3

= 27 - 6

= 21 Letter D

So the correct code is CHGD

You got everything right except the third :)