15. Let f(x) = 4x - 5 and g(x) = 3x + 7. Find f(x) + g(x) and state its domain. O X - 12; all real numbers
O 7x - 12; all real numbers
O x + 2; all real numbers
O 7x + 2; all real numbers​

step-by-step explanation:

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step-by-step explanation:

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

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step-by-step explanation:

answer