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Algebra / Linear functions Difficulty: Medium

fx=45x+600

The function f gives the monthly fee fx, in dollars, a facility charges to keep x crates in storage. What is the monthly fee, in dollars, the facility charges to keep 50 crates in storage?

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Explanation

The correct answer is 2,850. It’s given that the function fx=45x+600 gives the monthly fee, in dollars, a facility charges to keep x crates in storage. Substituting 50 for x in this function yields f50=4550+600, or f50=2,850. Therefore, the monthly fee, in dollars, the facility charges to keep 50 crates in storage is 2,850.