Tuition cost T (in dollars) for part-time students at Stone Hedge college is given by T = 400 + 150 * C, where C is the number of credits taken. Find the

tuition cost for 9 credits.

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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