For the function $f$ defined by $f(x) = 3x + 6$, evaluate a) $f(3)$ b) $f(-x) + f(3)$
Added by Allison S.
Close
Step 1
a) To evaluate f(3), we substitute 3 into the function f(x) = 5x: f(3) = 5(3) = 15 b) To evaluate f(-3), we substitute -3 into the function f(x) = 5x: f(-3) = 5(-3) = -15 Show more…
Show all steps
Your feedback will help us improve your experience
Nicole Smina and 51 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Evaluate a function. Given $f(x)=\frac{x}{x+5},$ find $f(-3)$.
Linear Equations in Two Variables
The Rectangular Coordinate System
Given the function $f(x)=x^{2}-3 x :$ a. Evaluate $f(5)$ . b. Solve $f(x)=4$
Functions
Functions and Function Notation
Given the function $f(x)=x^{2}-3 x$ a. Evaluate $f(5)$. b. Solve $f(x)=4$
Recommended Textbooks
Elementary and Intermediate Algebra
Algebra and Trigonometry
Watch the video solution with this free unlock.
EMAIL
PASSWORD