A 13-inch candle is lit and burns at a constant rate of 1.1 inches per hour. Let t represent the number of hours since the candle was lit, and suppose f is a function such that f(t) represents the remaining length of the candle (in inches) t hours after it was lit. a. Write a function formula for f. f(t) = 13-1.1t Preview b. What is the domain of f relative to this context? Enter your answer as an interval. (13,0) Preview c. What is the range of f relative to this context? Enter your answer as an interval. [0,13] Preview d. Solve f(t) = 7.2 for t. %3D t = 5.08 Preview
A 13-inch candle is lit and burns at a constant rate of 1.1 inches per hour. Let t represent the number of hours since the candle was lit, and suppose f is a function such that f(t) represents the remaining length of the candle (in inches) t hours after it was lit. a. Write a function formula for f. f(t) = 13-1.1t Preview b. What is the domain of f relative to this context? Enter your answer as an interval. (13,0) Preview c. What is the range of f relative to this context? Enter your answer as an interval. [0,13] Preview d. Solve f(t) = 7.2 for t. %3D t = 5.08 Preview
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.9: Combining Functions
Problem 11CYU
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Rate of Change
The relation between two quantities which displays how much greater one quantity is than another is called ratio.
Slope
The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as:
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I can not figure out the domain and if f(t)= 7.2 for t.
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Since the total length of candle is 13 inch .
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