Solving Exponential Equations and Logarithms

The video tutorial explains how to solve an exponential equation using logarithms. It begins by isolating the exponential part of the equation and then applies logarithms to solve for the variable T. The solution is calculated and verified, with attention to rounding to four decimal places. The tutorial emphasizes the use of a calculator for logarithmic calculations and checks the solution against the original equation to ensure accuracy.

What is the first step in solving an exponential equation using logarithms?

• Subtract the exponent from both sides

• Add the base to both sides

• Isolate the exponential part

• Multiply both sides by the base

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CCSS.3.OA.A.2

What operation is performed to simplify 25 divided by 25?

• It becomes 0

• It becomes 25

• It becomes 1

• It becomes 50

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CCSS.HSF.BF.B.5

Which logarithm can be used to solve for the variable in the exponent?

• Common log

• Natural log

• Decimal log

• Binary log

What property of logarithms allows the exponent to be moved to the front?

• Product property

• Quotient property

• Power property

• Change of base property

After applying the power property, what is the next step to solve for the variable?

• Divide both sides by the coefficient of the variable

• Subtract the base from both sides

• Add the base to both sides

• Multiply both sides by the base

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CCSS.7.EE.B.4A

What is the approximate value of T after solving the equation?

• 3.1429

• 4.1329

• 5.1329

• 6.1329

Why is the solution only approximately equal to 40,000?

• Because the equation was not solved

• Due to a calculation error

• Due to rounding the exponent

• Because the base was incorrect

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CCSS.8.EE.C.7B

What is the purpose of verifying the solution by substituting back into the original equation?

• To ensure the solution is correct

• To change the base of the equation

• To check for calculation errors

• To find a new solution

What is the result of 25 times 1.25 raised to the power of 8 times 4.1329?

• More than 40,000

• Less than 40,000

• Approximately 40,000

• Exactly 40,000

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CCSS.8.EE.A.2

What is the significance of rounding to four decimal places in this context?

• It simplifies the calculation

• It ensures precision in the solution

• It makes the equation easier to solve

• It reduces the number of steps

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CCSS.8.EE.A.2