2 years ago

50 POINT!!!!!!!!!!!!!

Mathematics

2 answers:

Irina-Kira [14]2 years ago

7 0

Now i am not positive but i did my very best so someone correct me if im wrong please but i think it might be B.

hammer [34]2 years ago

5 0

It is B I hope this helps you

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Can some one help me plz trying to figure out? Need help ASAP

zloy xaker [14]

Answer:

$a. = -35 \\ b. = 9a + 1 \\ c. = -35$

Step-by-step explanation:

$a. \\ = > \: 7a - 1 + 2a + 2 \\ \\ = > 7( - 4) - 1 + 2( - 4) + 2 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: (a = - 4) \\ \\ = > - 28 - 1 - 8 + 2 \\ \\ = > - 37 + 2 \\ \\ = > - 35 \\ \\ \\ b. \\ = > 7a - 1 + 2a + 2 \\ \\ = > 7a + 2a - 1 + 2 \\ \\ = > 9a + 1 \\ \\ \\ c. \\ = > 9a + 1 \\ \\ = > 9( - 4) + 1 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: (a = - 4) \\ \\ = > - 36 + 1 \\ \\ = > - 35$