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#30606

applications

functions

medium

80 sec

A certain service charges a base fee for the first 3 hours of service, plus an hourly rate for each additional hour. The total cost $f (x)$ , in dollars, for $x$ hours of service, where $x \geq 3$ , is given by the function $f (x) = 75 x + 125$ . What is the base fee, in dollars, for the first 3 hours of service?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.