Answer:
f(3) = -15
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Functions
- Function Notation
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = -2x² + 3x - 6
f(3) is x = 3 for the function f(x)
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em> [Function]: f(3) = -2(3)² + 3(3) - 6
- Exponents: f(3) = -2(9) + 3(3) - 6
- Multiply: f(3) = -18 + 9 - 6
- Add: f(3) = -9 - 6
- Subtract: f(3) = -15
6+3x = 2(2 + x)
First we will need to open the parenthesis by multiplying the number that’s in front of them:
6+3x=4+2x
Now we need to separate the numbers from the X. By subtracting 2x from both sides:
6+3x=4+2x
-2x -2x
————————
6+x=4
Now we subtract 6 from both sides.
6+x=4
-6 -6
—————
X = -2
Answer:
2x+15y=
Step-by-step explanation:
something like that
Answer:
10
Step-by-step explanation:
Add all of the numbers up and divide by the amount of numbers there are. You subtract for the negatives.
Answer:
k-3 ≥8
Step-by-step explanation:
k-3 ≥8
kate takes out 3 dollars and has at least 8 dollars left, meaning she could have more.
