Question

In a Northwest Washington County, speeding fines are determined by the formula: F = 12(s - 60) + 45 where F is the cost, in dollars, of the fine if a person is caught driving at a speed of s miles per hour. If a fine comes to $321, how fast was the person speeding? Answer: The person's speed was miles per hour.

          In a Northwest Washington County, speeding fines are determined by the formula:
F = 12(s - 60) + 45
where F is the cost, in dollars, of the fine if a person is caught driving at a speed of s miles per hour.
If a fine comes to $321, how fast was the person speeding?
Answer: The person's speed was miles per hour.

In a Northwest Washington County, speeding fines are determined by the formula:
F = 12(s - 60) + 45
where F is the cost, in dollars, of the fine if a person is caught driving at a speed of s miles per hour.
If a fine comes to 321, how fast was the person speeding?
Answer: The person's speed was miles per hour.

Added by Eugenia M.

Introductory and Intermediate Algebra for College Students 4th

Robert Blitzer 4th Edition

Instant Answer

Solved by Expert Benjamin Densmore

09/26/2022

Step 1

\[ F = 12(s - 60) + 45 \] \[ F = 321 \] Show more…

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In a Northwest Washington County, speeding fines are determined by the formula: F = 12(s - 60) + 45 where F is the cost, in dollars, of the fine if a person is caught driving at a speed of s miles per hour. If a fine comes to $321, how fast was the person speeding? Answer: The person's speed was miles per hour.