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Solve Linear Equations and Analyze Linear Functions Name: 1) Solve: 4( x 1) 2 x x 21 2) Solve: 2 x 5 3 5 3) Solve: 1 x3 x 4 2 4) The plumber charges $50 to come to your home and then charges $70/hour for any time spent working. The linear equation C (t ) 70t 50 models this situation, where C is the total charge for service and t is time in hours. a) What does C (0) equal and what does it mean in the context of this story? b) What does C (3) equal and what does it means in the context of this story? c) If you were to graph this equation, it would be a line. What is the slope of this line and what does it mean in the context of this story? d) What is the y-intercept of this line and what does it mean in the context of this story?