College Algebra: Sections 3.4-6.5

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

A cubic polynomial has roots at $x = -2$, $x = 1$, and $x = 3$. Which of the following could be the polynomial?

  • $x^3 - 2x^2 - 5x + 6$
  • $x^3 - 6x^2 + 11x - 6$
  • $x^3 - 2x^2 - x + 6$ (correct)
  • $x^3 + 4x^2 + x - 6$

Which of the following statements is true regarding the graph of the rational function $f(x) = \frac{x+1}{(x-2)(x+3)}$?

  • The graph has a vertical asymptote at $x = -1$ and intercepts at $x=2$ and $x=-3$.
  • The graph has vertical asymptotes at $x = -2$ and $x = 3$, and an x-intercept at $x = 1$.
  • The graph has a vertical asymptote at $x = 2$ and $x = -3$, and no x-intercepts.
  • The graph has vertical asymptotes at $x = 2$ and $x = -3$, and an x-intercept at $x = -1$. (correct)

How does the graph of $y = 2^{x+1} - 3$ compare to the graph of $y = 2^x$?

  • Shifted right 1 unit and down 3 units.
  • Shifted left 1 unit and down 3 units. (correct)
  • Shifted right 1 unit and up 3 units.
  • Shifted left 1 unit and up 3 units.

Solve for $x$: $3^{2x+1} = 81$

<p>$x = \frac{3}{2}$ (A)</p> Signup and view all the answers

Given the equation $\log_2(x) + \log_2(x-2) = 3$, find the value of $x$.

<p>$x = 4$ (C)</p> Signup and view all the answers

Suppose $5,000 is invested in an account that pays 6% annual interest compounded quarterly. What will be the balance after 3 years?

<p>$5,984.71 (B)</p> Signup and view all the answers

A store sells apples and bananas. On Monday, they sold 30 apples and 12 bananas for a total of $18. On Tuesday, they sold 20 apples and 8 bananas for a total of $12. What is the price of one apple?

<p>$0.40 (D)</p> Signup and view all the answers

What is the partial fraction decomposition of $\frac{5x - 1}{(x-1)(x+2)}$?

<p>$\frac{3}{x-1} + \frac{2}{x+2}$ (D)</p> Signup and view all the answers

Which point satisfies the following system of inequalities: $y > x^2$ and $y < -x + 6$?

<p>$(2, 5)$ (A)</p> Signup and view all the answers

The population of a town is modeled by the equation $P(t) = 1000e^{0.05t}$, where $t$ is the number of years since 2020. In what year will the population reach 2000?

<p>2034 (C)</p> Signup and view all the answers

Flashcards

Factoring Cubic Polynomials

A method to factor cubic polynomials or construct a polynomial from its roots.

Graphing Rational Functions

Graphing rational functions including identifying vertical asymptotes and intercepts.

Graphing Exponential/Log Functions

Graphing exponential or logarithmic functions including shifts, reflections, and transformations.

Solving Exponential/Log Equations

Solving exponential and logarithmic equations using the one-to-one property.

Signup and view all the flashcards

Laws of Logs for Solving Equations

Using properties of logarithms to simplify and solve logarithmic equations.

Signup and view all the flashcards

Compound Interest

Calculating the future value of an investment using compound interest formulas.

Signup and view all the flashcards

System of Two Equations

Solving systems of two equations, often in word problems, to find unknown values.

Signup and view all the flashcards

Partial Fractions Decomposition

Decomposing a rational function into simpler fractions.

Signup and view all the flashcards

Graphing System of Inequalities

Graphing the solution set of a system of inequalities.

Signup and view all the flashcards

Study Notes

  • Exam 3 is on Wednesday and covers sections 3.4 up to 6.5.

Factoring Cubic Polynomials

  • Utilize synthetic division to factor cubic polynomials.
  • Alternatively, construct a polynomial if given its roots.

Graphing Rational Functions

  • Graph rational functions, with an emphasis on those having two vertical asymptotes.
  • Identify and provide asymptotes and intercepts accurately.

Graphing Exponential and Logarithmic Functions

  • Graph exponential or logarithmic functions incorporating shifts.
  • Be prepared for exponential functions reflected upside down.

Solving Exponential and Log Equations

  • Solve standard exponential or logarithmic equations.
  • Employ the one-to-one property.

Solving Equations with Laws of Logs

  • Use the laws of logarithms to solve various equations.

Compound Interest

  • Problems involving compound interest calculations.

Systems of Two Equations

  • Solve systems of two equations, with a focus on word problems.

Partial Fractions Decomposition

  • Perform partial fractions decomposition.

Graphing Systems of Inequalities

  • Graph systems of inequalities.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Browser
Browser