Solve.Mark the electrician charges 
for a house call, and then 
per hour for labor. Sara the electrician charges 
for a house call, and then 
per hour for labor. Write a cost equation for each electrician, where y is the total cost of the electrical work and x is the number of hours of labor.
A. Mark: y = 35x + 85
Sara: y = 50x + 70
B. Mark: y = 70x + 50
Sara: y = 85x + 35
C. Mark: y = 85x + 35
Sara: y = 70x + 50
D. Mark: y = 50x + 70
Sara: y = 35x + 85
Answer: A
Mathematics
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