Question

Evaluate h(x)=-2x+9 when x=-2,0 and 5

Answer 1

h(-2) = 13

h(0) = 9

h(5) = -1

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

Explanation:

Step 1: Define

h(x) = -2x + 9

x = -2

x = 0

x = 5

Step 2: Evaluate

x = -2

1. Substitute in x: h(-2) = -2(-2) + 9
2. Multiply: h(-2) = 4 + 9
3. Add: h(-2) = 13

x = 0

1. Substitute in x: h(0) = -2(0) + 9
2. Multiply: h(0) = 0 + 9
3. Add: h(0) = 9

x = 5

1. Substitute in x: h(5) = -2(5) + 9
2. Multiply: h(5) = -10 + 9
3. Add: h(5) = -1