7
Solve for c.
2 (c + 1) = 10
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Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Ineed to know the answer to this algebra question.

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)