Question

If f(x) = -2x + 3 and g(x) = 2x + 3; solve for f(3) + g(7)
Answers: 0, 14, 26, 25

Answer 1

The answer would be 14

Answer 2

14

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Algebra I

• Functions
• Function Notation

Explanation:

Step 1: Define

f(x) = -2x + 3

g(x) = 2x + 3

f(3) is x = 3 for function f(x)

g(7) is x = 7 for function g(x)

Step 2: Solve

1. Substitute in x [Functions]: f(3) = -2(3) + 3, g(7) = 2(7) + 3
2. Substitute in functions: f(3) + g(7) = -2(3) + 3 + 2(7) + 3
3. Multiply: f(3) + g(7) = -6 + 3 + 14 + 3
4. Add: f(3) + g(7) = -3 + 14 + 3
5. Add: f(3) + g(7) = 14