Question

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Answer 1

If u=6,

3-4u=11

3-4(6)=11

3-24=11 (false; not a solution)

If u=-8,

3-4u=11

3-4(-8)=11

3+32=11 (false; not a solution)

If u=-10,

3-4u=11

3-4(-10)=11

3+40=11 (false; not a solution)

If u=5,

3-4u=11

3-4(5)=11

3-20=11 (false; not a solution)

Answer 2

6 is no, -8 is no, - 10 is no, 5 is no

Explanation:

6 is no beacause 3 - 4(6) = 11

3 - 24 = 11

-21 = 11

-21 is not equal to 11 so that means that 6 is not a solution.

- 8 is no because 3 - 4(- 8) = 11

3 + 32 = 11

35 = 11

35 is not equal to 11 so that means that - 8 is no a solution

- 10 is no beacause 3 - 4(-10) = 11

3 + 40 = 11

43 = 11

43 is not equal to 11 so that means that - 10 is not a solution.

5 is no beacause 3 - 4(5) = 11

3 - 20 = 11

-17 = 11

-17 is not equal to 11 so that means that 5 is not a solution.

Hope that helps!