Question

If g(x) = 1/2x - 5, then for what value of x is g(x) = 8?

a) -1
b) 11
c) 26
d) 6

Answer 1

c) 26

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

Equality Properties

Explanation:

Step 1: Define

g(x) = 1/2x - 5

g(x) = 8

Step 2: Solve for x

1. Substitute: 8 = 1/2x - 5
2. Isolate x term: 13 = 1/2x
3. Isolate x: 26 = x
4. Rewrite: x = 26