Sign In
Ask Question
Darwin Garrett
Mathematics
14 January, 08:35
How do you evaluate f (x) = 3*3-4x+5
+3
Answers (
1
)
Terry Quinn
14 January, 08:38
0
- - It'll be a lot easier if you clean up the function first.
You're not changing the function. You're just making it
easier to read and work on without mistakes.
Notice that 3x3=9, so the function is f (x) = 9 - 4x + 5
Combine like terms, and the function is f (x) = 14 - 4x.
Much easier to work with.
- - Now, when somebody tells you to evaluate the function for some number,
just take their number, write it in place of 'x', and see what you've got.
Example:
f (x) = 14 - 4x
Evaluate f (x) for x = 3.
- - Write 3 in place of 'x' in the function: f (3) = 14 - 4 (3)
- - 4 (3) = 12. So the function is f (3) = 14 - 12
- - Finish up the subtraction : f (3) = 2
You just evaluated f (x) for x=3.
Nice job!
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“How do you evaluate f (x) = 3*3-4x+5 ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What 2 number add up to 0.21. 0.01, 0.11, 1.1, 0.1, 0.9, 1.2
Answers (1)
Simplify expression 16 + (4x6) - 3^2
Answers (1)
How to add 3.102+6and3/4+20
Answers (1)
Danny Daw Geater is challenged to eat 45 hotdogs in a hot dog eating contest. After he has eaten 18 of them, what percentage of his goal has he eaten?
Answers (1)
Which relationship has a unit rate of 60 miles per hour
Answers (1)
New Questions in Mathematics
Carol has two cats rover and Bobo. Rover eat three fourths of a can of cat food each day and bobo eat a half of a can of cat food each day. Cat food cost five dollars for three cans. It's is only sold in three can packs.
Answers (1)
Write a system of equations with (1,-2) as its solution
Answers (1)
which has the best unit rate? 16 oz for $4.25 or 20 oz for $ 4.55 I chose 16 oz but I need to make sure it's right
Answers (2)
Is 3√ a irrational number
Answers (1)
Does anyone know what 2 to the 3rd power means?
Answers (1)
Home
»
Mathematics
» How do you evaluate f (x) = 3*3-4x+5
Sign In
Sign Up
Forgot Password?