2. The number of lawn signs being posted in a city for a certain candidate has been growing exponentially each day since the candidate started going door-to-door to speak to the residents. Five days after the candidate started speaking to the residents there were 15 lawn signs and 19 days since speaking to the residents there were 41 lawn signs. a. Find an exponential function S(d) that models the number of lawn signs d days since the candidate started speaking to the residents. Use at least 8 places after the decimal in your work but round to 3 places after the decimal in your final answer, where necessary. b. Based on your model, what is the expected number of lawn signs 21 days since the candidate starting speaking to the residents? Round to the nearest whole number and include units in your answer.
2. The number of lawn signs being posted in a city for a certain candidate has been growing exponentially each day since the candidate started going door-to-door to speak to the residents. Five days after the candidate started speaking to the residents there were 15 lawn signs and 19 days since speaking to the residents there were 41 lawn signs. a. Find an exponential function S(d) that models the number of lawn signs d days since the candidate started speaking to the residents. Use at least 8 places after the decimal in your work but round to 3 places after the decimal in your final answer, where necessary. b. Based on your model, what is the expected number of lawn signs 21 days since the candidate starting speaking to the residents? Round to the nearest whole number and include units in your answer.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Version A/C #6
Version B #5
2. The number of lawn signs being posted in a city for a certain candidate has
been growing exponentially each day since the candidate started going
door-to-door to speak to the residents. Five days after the candidate started
speaking to the residents there were 15 lawn signs and 19 days since
speaking to the residents there were 41 lawn signs.
a. Find an exponential function S(d) that models the number of lawn signs
d days since the candidate started speaking to the residents. Use at least
8 places after the decimal in your work but round to 3 places after the
decimal in your final answer, where necessary.
b. Based on your model, what is the expected number of lawn signs 21
days since the candidate starting speaking to the residents? Round to
the nearest whole number and include units in your answer.
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