A train travels along a set of tracks according to the function s(t)=r-121² +45r+ 4 for r 20, where r is measured in seconds and s is measured in meters. On what interval(s) is the train moving to the right? (Enter your answer in interval notation. If entering more than one interval write the intervals as a union.) The value of s(f) is increasing to the right and decreasing to the left.
A train travels along a set of tracks according to the function s(t)=r-121² +45r+ 4 for r 20, where r is measured in seconds and s is measured in meters. On what interval(s) is the train moving to the right? (Enter your answer in interval notation. If entering more than one interval write the intervals as a union.) The value of s(f) is increasing to the right and decreasing to the left.
Chapter6: Exponential And Logarithmic Functions
Section6.7: Exponential And Logarithmic Models
Problem 20TI: Change the function y=3(0.5)x to one having e as the base.
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Transcribed Image Text:A train travels along a set of tracks according to the function s(t)=³-121² +45r+ 4 for 120, where t is measured in
seconds and s is measured in meters. On what interval(s) is the train moving to the right?
(Enter your answer in interval notation. If entering more than one interval write the intervals as a union.)
The value of s(t) is increasing to the right and decreasing to the left.
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