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kotykmax [81]
3 years ago
6

Given the function below, find f(-7) f(x) = -2x -1

Mathematics
1 answer:
kondor19780726 [428]3 years ago
3 0

Answer:

B

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = -2x - 1

f(-7) is x = -7

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    f(-7) = -2(-7) - 1
  2. Multiply:                               f(-7) = 14 - 1
  3. Subtract:                              f(-7) = 13
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algol13

Since, the polygon is a trapezoid made up of a rectangle and a right triangle. Therefore, according to the question, the figure of the polygon is attached.


Since, perimeter is the total length of the outer boundary of the figure. Therefore,

Perimeter of the polygon is=AB+BE+ED+DC+CA

                                             =18+17+8+18+15

                                             =76 \ ft


Area of the polygon = Area of Rectangle + Area of Triangle

                                  =[(18) \times (15)] + [(\frac{1}{2}) \times (8) \times (15)]

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3 years ago
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