A plumber has a set fee for a house call and charges by the hour for repairs. The total cost of her services can be modeled by y = 125t + 95. Which statements about this function are true?
I. The house call costs $95
II. The plumber charges $125 per hour.
III. The number of hours the job takes is represented by t.
Responses
A I and II, onlyI and II, only
B I and III, onlyI and III, only
C II and III, onlyII and III, only
D I, II, and III
B. I and III, only
Explanation:
I. The house call costs $95, so the statement y = 125t + 95 is true.
II. The plumber charges $125 per hour, so the statement y = 125t + 95 is true.
III. The number of hours the job takes is represented by t, so the statement y = 125t + 95 is true.