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Find the value of the following expression and round to the nearest integer:

sum_(n=0)^(98)100(1.01)^(n)
Answer:

Find the value of the following expression and round to the nearest integer:\newlinen=098100(1.01)n \sum_{n=0}^{98} 100(1.01)^{n} \newlineAnswer:

Full solution

Q. Find the value of the following expression and round to the nearest integer:\newlinen=098100(1.01)n \sum_{n=0}^{98} 100(1.01)^{n} \newlineAnswer:
  1. Recognize Given Expression: We recognize that the given expression is a geometric series with the first term a=100a = 100 and the common ratio r=1.01r = 1.01. The sum of a finite geometric series can be calculated using the formula Sn=a(1rn)(1r)S_n = \frac{a(1 - r^n)}{(1 - r)}, where nn is the number of terms.
  2. Determine Number of Terms: First, we need to determine the number of terms in the series. Since the series starts at n=0n = 0 and goes up to n=98n = 98, there are a total of 9999 terms (we include the starting term).
  3. Plug Values into Formula: Now we can plug the values into the sum formula for a geometric series: Sn=100(11.0199)(11.01)S_n = \frac{100(1 - 1.01^{99})}{(1 - 1.01)}.
  4. Calculate Power: We calculate the power 1.01991.01^{99} using a calculator to avoid any manual calculation error.
  5. Substitute Power into Formula: After calculating the power, we substitute it back into the formula: Sn=100(11.0199)/(11.01)S_n = 100(1 - 1.01^{99}) / (1 - 1.01).
  6. Perform Subtraction: We perform the subtraction in the numerator and the denominator: Sn=100(11.0199)(0.01)S_n = \frac{100(1 - 1.01^{99})}{(-0.01)}.
  7. Simplify Expression: We multiply the numerator and denominator by 100-100 to simplify the expression: Sn=10000(11.0199)S_n = -10000(1 - 1.01^{99}).
  8. Calculate Value: We calculate the value of the expression 10000(11.0199)-10000(1 - 1.01^{99}) using a calculator to ensure accuracy.
  9. Round Result: Finally, we round the result to the nearest integer as the question prompt asks for the rounded value.

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