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 = 25x + 115
Sara: y = 30x + 80
B. Mark: y = 115x + 25
Sara: y = 80x + 30
C. Mark: y = 80x + 30
Sara: y = 115x + 25
D. Mark: y = 30x + 80
Sara: y = 25x + 115
Answer: A
Mathematics
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