The graph of an exponential function is given. Select the function for each graph from the following options: f(x) = 4x, g(x) = 4-x, h(x) = -4-x, r(x) = -4-x+3
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- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
6. Exponential & Logarithmic Functions
Introduction to Exponential Functions
Problem 8
Textbook Question
Solve each equation. Round answers to the nearest hundredth as needed. x2/3 =36
Verified step by step guidance1
Recognize that the equation is \(x^{\frac{2}{3}} = 36\). Our goal is to solve for \(x\).
To isolate \(x\), raise both sides of the equation to the reciprocal power of \(\frac{2}{3}\), which is \(\frac{3}{2}\). This gives us \(\left(x^{\frac{2}{3}}\right)^{\frac{3}{2}} = 36^{\frac{3}{2}}\).
Simplify the left side using the property of exponents: \(\left(a^{m}\right)^{n} = a^{mn}\). So, \(x^{\frac{2}{3} \times \frac{3}{2}} = x^{1} = x\).
Now, focus on simplifying the right side: \$36^{\frac{3}{2}}\(. Recall that \)a^{\frac{m}{n}} = \left(\sqrt[n]{a}\right)^{m}\(. So, \)36^{\frac{3}{2}} = \left(\sqrt{36}\right)^{3}$.
Calculate \(\sqrt{36}\), then cube the result to find the value of \(x\). Finally, consider both the positive and negative roots if applicable, and round your answer to the nearest hundredth.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Rational Exponents
Rational exponents represent roots and powers combined. For example, x^(2/3) means the cube root of x squared, or (x^(1/3))^2. Understanding how to manipulate and interpret these exponents is essential for solving equations involving fractional powers.
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Rational Exponents
Isolating the Variable
To solve equations, isolate the variable by performing inverse operations. For x^(2/3) = 36, you can raise both sides to the reciprocal power (3/2) to undo the fractional exponent, allowing you to solve for x directly.
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Equations with Two Variables
Rounding and Approximation
When solutions are irrational or decimals, rounding to a specified place value is necessary. Here, answers should be rounded to the nearest hundredth, meaning two decimal places, to provide a clear and practical numerical solution.
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