Step 1 :The problem describes a geometric sequence where the first term is 190 and the common ratio is 0.9 (since the responses are declining by 10% each day).
Step 2 :The sum of the first n terms of a geometric sequence can be calculated using the formula: \(S_n = a * (1 - r^n) / (1 - r)\) where: \(S_n\) is the sum of the first n terms, \(a\) is the first term, \(r\) is the common ratio, and \(n\) is the number of terms.
Step 3 :In this case, we want to find the sum of the first 13 terms, so \(n = 13\). We can substitute the given values into the formula and calculate the result.
Step 4 :Given: \(a = 190\), \(r = 0.9\), \(n = 13\)
Step 5 :Substitute the given values into the formula: \(S_n = 190 * (1 - 0.9^{13}) / (1 - 0.9)\)
Step 6 :Calculate the result: \(S_n = 1417\)
Step 7 :Final Answer: The company would get \(\boxed{1417}\) total responses over the course of the first 13 days after the magazine was published, to the nearest whole number.