The formula for simple interest is:
I=\frac{P\times t\times r}{100}
Given P = $75000, t = 12.5 years, and r = 3.45% or 0.0345:
I=\frac{75000\times12.5\times0.0345}{100}=323.4375
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Math question: What is the period and range of the tangent function f(x) = tan x?Answer: The period of the tangent function is π (or 180°) because it repeats every π units. The range of f(x) is (-∞, +∞) as it extends infinitely both in the positive and negative directions. However, the function has vertical asymptotes at x = (n + 1/2)π, where n is an integer, meaning it never reaches those values.