A new shopping mall records 150 total shoppers on their first day of business. Each day after that, the number of shoppers is 15% more than the number of shoppers the day before. Which expression gives the total number of shoppers in the first n days of business? Choose 1 answer:(A) 1.15(1−1501−150n)(B) 0.85(1−1501−150n)(C) 150(1−1.151−1.15n)(D) 150(1−0.851−0.85n)
Q. A new shopping mall records 150 total shoppers on their first day of business. Each day after that, the number of shoppers is 15% more than the number of shoppers the day before. Which expression gives the total number of shoppers in the first n days of business? Choose 1 answer:(A) 1.15(1−1501−150n)(B) 0.85(1−1501−150n)(C) 150(1−1.151−1.15n)(D) 150(1−0.851−0.85n)
Calculate Daily Increase: First day shoppers are 150. Each subsequent day increases by 15%, so multiply by 1.15 for each day after the first.
Geometric Series Formula: The total number of shoppers over n days is a geometric series with the first term a=150 and common ratio r=1.15.
Calculate Total Shoppers: The sum of the first n terms of a geometric series is given by Sn=1−ra(1−rn).
Substitute Values: Substitute a=150 and r=1.15 into the formula to get the expression for the total number of shoppers: Sn=150(1−1.151−1.15n).
Match with Answer Choices: Check the answer choices to find the expression that matches our calculation.
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