4. In \( 3 \) years, a gym's membership went up from \( 6,400 \) to \( 8,400 \) . Which expression shows how to find the percent of increase?
A \( 2,000 \div 8,400 \)
B \( 2,000 \div 6,400 \)
C \( 6,400 \div 2,000\)
Pregunta
Answer
B) 2000÷6400
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Find the solution of the exponential equation \( 16 e ^ { x } = 12 \) in terms of logarithms, or correct to four decimal places. \( x = \)
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Certain radioactive material decays in such a way that the mass remaining after \( t \) years is given by the function
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