C(m)=7+.20(m-3)

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Solution for C(m)=7+.20(m-3) equation: 



(C)=7+.20(C-3)

We move all terms to the left:

(C)-(7+.20(C-3))=0



We calculate terms in parentheses: -(7+.20(C-3)), so:

7+.20(C-3)

determiningTheFunctionDomain
.20(C-3)+7

We multiply parentheses

0.2C-0.6+7

We add all the numbers together, and all the variables

0.2C+6.4

Back to the equation:

-(0.2C+6.4)



We get rid of parentheses

C-0.2C-6.4=0

We add all the numbers together, and all the variables

0.8C-6.4=0

We move all terms containing C to the left, all other terms to the right

0.8C=6.4

C=6.4/0.8

C=8

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