Question to-rep
To repair a refrigerator, a technician charges per hour for labor plus for parts. Which function f represents the total amount, in dollars, the technician will charge for this job if it takes hours?
To repair a refrigerator, a technician charges $ 60 per hour for labor plus $ 120
Easy-difficulty · SAT Math · Linear Functions — Rate of change applications. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice C is correct. It’s given that the technician charges per hour for labor. Therefore, if the job takes hours, the technician will charge , or , for labor. It’s also given that the technician charges for parts. Therefore, represents the total amount, in dollars, the technician will charge for this job if it takes hours.
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect. This function represents the total amount, in dollars, the technician charges for labor only, not the total amount charged for labor and parts.
Choice D is incorrect. This function represents the total amount, in dollars, the technician would charge if the charge for parts were subtracted from, rather than added to, the charge for labor.
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