Solve the following problem involving applications of linear equations.A local plumber charges $28 per hour with a travel charge of $45. The equation C = 28n + 45 models the cost, C , in dollars, of home plumbing repair for n hours. Use the equation to answer the following questions. Show each answer as an ordered pair, (n, C). a. If the plumber works for 2 hours, how much will it cost you? b. If the plumber works for 3.5 hours, how much will it cost you? c. If you have only $115 budgeted for the plumber, how many hours can you afford?
A. a. (2, 129), b. (3.5, 143), c. (3.5, 115)
B. a. (2, 101), b. (3.5, 143), c. (2.5, 115)
C. a. (2, 129), b. (3.5, 171), c. (2.5, 115)
D. a. (2, 101), b. (3.5, 171), c. (1.5, 115)
Answer: B
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A. x
B. 
C. 
D. 