Multiple Choice
The price of a 2-hour plumbing repair job is $130 and the price of a 5-hour job is $250. Write an equation for the cost C of a t-hour repair job and use the equation to find the cost of a repair job lasting 7 hours.
A) C = 40t + 50; $330
B) C = 40t; $280
C) C = 40t + 40; $320
D) C = 50t + 40; $390
Correct Answer:
Verified
Correct Answer:
Verified
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