Given the age in years, t, of a water-transport pipe, the formula R = 17 + 4 t c

Question

Given the age in years, t, of a water-transport pipe, the formula R = 17 + 4 t can be used to predict the rate of water leakage (in gallons per minute) from the pipe as it carries water from the headquarters of a farming cooperative to farmland a mile away. What is the meaning of the constant 17 in the function R ? A. Initially the pipe leaks at 4 gallons per year. B. Initially the pipe leaks at 17 gallons per year. C. Initially the pipe leaks 17 gallons. D. Initially the pipe leaks at 4 gallons per minute. E. Initially the pipe leaks 4 gallons. F. Initially the pipe leaks at 17 gallons per minute. Which of the following is the correct statement? A. As the pipe ages, the rate of its water leakage increases by 17 gallons per minute per year. B. As the pipe ages, the rate of its water leakage increases by 4 gallons per minute. C. As the pipe ages, the rate of its water leakage increases by 17 gallons per minute. D. As the pipe ages, the rate of its water leakage increases by 4 gallons per minute per year.

Explanation / Answer

R=17+4t

In that 17 states that:
Initially the pipe leaks 17 gallons

4t suggests that
As the pipe ages, the rate of its water leakage increases by 4 gallons per minute.

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